Sounds like a very comprehensive shopping list!
Just a couple of things I would change in that list:
- Do yourself a favour and get the 2.4gHz version of the radio. So much nicer than having to fiddle about with crystals and if you ever need to set anything up on the car in the pits you can just turn it on whenever and and not ruin someones run.
- The 6.5 will be mental in a B4. Go for a 7.5 and it will give you a broader usefull range combined with any Lipo over 40-45C and not get quite so hot. Remember that brushless motors overheat when undergeared as well. That was one of the things I had to get my head round when I started up again.
- Have a look at Vampire Lipos from DMS for example. Great value and they do a 6200mAh 60C

now. Remember the higher the C rating the punchier it will feel and the higher turn motor you can run.
- You do not need the setup system. People will point and throw food at you (I would

) Setup boards are for touring cars and touring cars only. Camber gauge and a proper table is all you need. You''ll notice the car goes better with some slop in the joints anyway...
- 2 Sets of lipos will do you fine but I would not use one exclusively.
Other than that give it some and have fun