Let me know how that LnL treats you - I'll more than likely be ordering one for Father's Day.
So you've got the press nailed down, here is what I would recommend as a somewhat seasoned reloader:
With the LnL you'll need the proper plates and the LnL die adapters (you probably have these on order with your LnL).
Scale - whether it's a run of the mill balance beam or electronic, you'll need a powder scale to weigh or check your charges.
Dies - you've probably got this covered, but I figured I'd add it to the list anyway
Calipers - dial or digital, you'll need them to gauge your brass trim length and cartridge overall length. This is a very, very important tool.
Manuals - Lee, Hornady, Sierra, etc. You'll need manuals to work up your loads for a particular caliber and projectile weight with a specific powder. You can get paper manuals for specific calibers that combine all of the data from a variety of sources for pretty cheap - I use these quite a bit personally.
Case trimmer - If you are reloading rifle rounds, which you are, you'll need a case trimmer to keep your brass from growing beyond specifications. Forstner makes a good one, as does Lee, RCBS and a few others. I use a manual Forstner, one of my best friends is pretty fond of the Lee Zip Trim system. So long as you know how t use it, they all are pretty good.
Case Maintenance Kit - this usually includes a series of brushes, reamers and bushings to make your primer pockets uniform and clean them. It also contains neck brushes and neck deburring tools and chamfer tool to remove the little burrs on the bass neck after you trim it. RCBS makes a kit that you can get that has all of this in one box.
Projectile Pulling Die - I just broke my 2nd impact puller last night, so I'm looking for a die that will pull projectiles (you seat them too deep, or in my case - you discover that your rifle twist won't work with a certain projo weight after you've loaded 100 of them up). Impact pullers work good, but stay away from the plastic ones you get at Cabela's or Sportsmen's - they last about 20 rounds before they break.
Tumbler - you don't necessarily NEED one, but life is much, much easier when you are using cleaned and polished brass. You get what you pay for in these, so stay away from Frankford Arsenal and some of the other cheap brands. I have a Lyman, but RCBS and Dillon also make good ones. When it comes to tumbling media - DO NOT buy that overpriced crap that you get at gun shops. Go to Petsmart and get you a bag of walnut bird bedding. It is exactly the same stuff, but about 1/10 of the price. Then go get you a bottle of NuFinish Car Polish and put a cap ful of that in about every 5th load you tumble. I'm still on the same media that I started about 3 months ago and have polished about 25,000 rounds with this method and still get high luster finish.
Optional Accessories:
Modified Case - if you want to get really serious with your rifles about accuracy, get a modified case for that chamber. It's a regular piece of brass that has been trimmed and drilled and tapped at the primer end to allow it to screw to the modified case gauge.
Modified Case Gauge - this screws into the modified case. You place your projo of choice in the neck, then insert into the chamber. When your projectile won't push any further, it has seated against the lands. You gauge the OAL, then back off about .002" to determine your round overall length for that particular projectile. This increases accuracy significantly. I think my particular gauge is a Hornady brand, but RCBS makes one too that is essentially exactly the same.
Neck trimmer - when brass is formed, there sometimes is a significant difference in the thickness of the brass at the neck. This can cause the projectile to be seated in the chamber crooked, which decreases accuracy. Forstner makes a good hand trimmer than evens out the neck, which increases accuracy. In the case of my .223 bolt, it made a monster difference in accuracy past 200 yards (I was hitting targets at well past 400 the other day that I would not normally have been able to hit).
Concentricity gauge - this measures how round your cases are. I don't have one personally, but I know people that shoot in long range competitions sometimes use these to ensure that their brass is uniform.
I also have an RCBS Chargemaster for my single stage rifle reloading. With the LnL, it isn't necessary, but even when I get my LnL, i plan to reload for my rifle with my single stage, and this machine has made life significantly easier in that aspect.
Cartridge holding tray - again, with the LnL this is not necessary, but with single stage you need something to hold your brass as it goes through the various stages of loading.
There are a bunch of other doo-dads out there, but many of them are uneccessary or just novelty type items.
The above is a pretty good list of the basics, plus a few extras. As you develop your system, you'll figure out what you need to augment your existing inventory. As you decide how much into accuracy you want to get, you can look around and get some other items that can help you load ammo that is match grade or better.
[This message has been edited by schmellba99 (edited 5/2/2009 6:28p).]