Thanks everyone for their interest in replying to my questions!!!
As a result of your advice, we will not be using anything faster than a 10.5!!!
I see an advantage is using brushless. We do not true comms and replace brushes... I remember when we had to do that some time ago... Not willing to go back to it.
We have driven Mini Z's in the tight RCP tracks but hated how everything in the cars is so small!! hahaha!!

Very difficult to repair, but we really enjoyed how agile those cars were when hopped-up!! We were even using the foam tires and really fought to keep the cars from traction rolling, but it was lots of fun.
I keep on telling the guys here we will enjoy 1/12 because it will really challenge our reflexes and skills, but everything is modular, unlike the Mini Z.
If you burn your servo, just drop in a new one... Ever tried fixing a servo in a Mini Z?? hahahhaha!!!
Parts count is also a plus in 1/12!!
Let's hope we can get started soon!!
Thanks!!