XRAY - Model racing cars

Hello. We have place 3 orders for Xray T4'14.
What option parts need we get for carpet indoor racing?
Some lower arms, may be graphite plates, spring?

I use the following option parts:

301213 UPPER HOLDER FOR BUMPER - 2.5 MM GRAPHITE - CNC MACHINED
301215 GRAPHITE BUMPER UPPER HOLDER BRACE 3.5 MM
302190 GRAPHITE FRONT LOWER ARM PLATE 1.6MM (2)
302169 FRONT SUSPENSION ARM - GRAPHITE - 1-HOLE
303169 REAR SUSPENSION ARM - GRAPHITE - 1-HOLE
303190 GRAPHITE REAR LOWER ARM PLATE 1.6MM (2)
303440 ALU ANTI-ROLL BAR COLLAR (2)
303493 T4 ANTI-ROLL BAR REAR 1.3 MM
305330 ECS DRIVE SHAFT 52MM WITH 2MM PINS - HUDY SPRING STEEL™ (1)
305434 HIGH-PERFORMANCE LOW FRICTION KEVLAR DRIVE BELT FRONT 3 x 513 MM
305447 HIGH-PERFORMANCE LOW FRICTION KEVLAR DRIVE BELT REAR 3 x 189 MM
306516-O T4 ALU TOP DECK MOUNT - ORANGE
308031-O ALU XRAY SHOCK SPRING RETAINING COLLAR - ORANGE (4)
308264 XRAY 4S SPRING-SET PROGRESSIVE C=2.5-2.8 (2)

The most neccessary items for performance are the graphite lower arm plates, the center post, and the ECS driveshafts.

Thank you very much!