ESC, Motor, LiPo help.

[rustnpede]

Well I was waiting until February to buy the electronics to finish my BL Revo (stock chassis and single speed), but this holiday sale is too good to pass up.

I want a 7xl with a 9920 but where I live the temps are usually around mid 90’s from late spring all the way through mid fall. How much hotter is a 7xl compared to a 8xl? Should I go with a 8xl or even a 9xl to keep temps cool? With the 9920 I will need a Li-Saver right?

I don’t know a thing when it comes to LiPo. At first I was thinking 4s and running them parallel but then I figured if went 2s and hooked them up in series then I would be able to use the packs seperately in other low voltage escs. Is there any advantage in parallel vs series?

What is the difference between TP taps and Hyperion taps? I have a superbrain 997, will any balancer work with it? I know if I go 4s then Ill need a different charger.

Thanks for taking the time to help a New-B.