I just got my LNL up and running. Here is what I ordered extra:
1. Extra bushings - a no brainer - I have my stations like this: 1. deprime and size, 2. expansion and powder drop, 3. powder die, 4. bullet seating, 5. Lee FCD very lightly. Given this set up you will need three bushings for each caliber. Do the math on what you load.
2. Powder die - I went with RCBS lock out die and really like it
3. I ordered the pistol rotor and meter for loads 4 grains and lower and it works very well. I have not used the pistol rotor supplied but my guess is it would have worked just fine.
4. I ordered a powder through expander die. It was an aftermarket from powder funnel. It allows me to bell and dispense powder at the same time and for multiple calibers without changing. It does NOT bell quite as nice as the expander on my die sets though but works well.
4. Be thinking about getting an extra tray for bullets. I don't have one and really need one up front to speed things up.
5. I ordered some extra springs but I don't think I will need them. It comes with a couple extras already.
6. Definitely get the one shot cleaner and lube. Clean the dickens out of everything.
7. Watch the video on youtube about adjusting the primer system on the LNL.
Good luck, it works great.