hey guys i wanna buy a B4.x, unfortunately it's nearly impossible to get a used B4.2 here and a new kit is too expensive for me

Some guy here is selling his B4.1 with a few parts for round about 160 bucks. i know it's very expensive, but most people here won't ship to germany, so i have no choice.
It has:
- 2 front a-arms (composite)
- 2 rear a-arms (composite)
- caster blocks 20, 25 and 30°
- Bulkhead new
- Losi Wheels front and rear new (not hex)
- geardiff used
- Aluminium steering knuckles (maybe old ones that don't fit the B4.1??)
- shock repair kit
- 2 rear shocks
- front springs small bore: blue, brown, silver, green, black, gold
- rear springs small bore: blue, silver, grey
- 6x CVDs but for the B4
- 2 spoilers
- 1 unpainted body
it doesn't have the new VTS Slipper, +8mm Chassis and Bigbores

do i need these features to be competitive on a small bumpy highgrip astroturf track?