The best bet is to use the 8.8 with a sensored system or use the Sidewinder with the Castle 4600kv motor or the Tekin line of sensorless motors. That way you will get the best performance possible out of your system.
Some people do run the lower winds with little to no problems but it is always best to use Sensorless with sensorless motors and sensored with sensored motors to get your best performance.
Castle Creations (Since 2005)
Bumps & Jumps RC (One of the best racing facilities around)
ST Racing Concepts (STRC) Great aluminum upgrades for many brands.
Custom Works (Best Oval Cars around). Too many titles to list
Shout out to: Sticky Kicks, CR Graphics and Race Ready Products