XRAY - Model racing cars

Hi,
I have just treated myself to a new T4 2015 kit, after research it seemed the best option for me.

I have recently joined a club which has very close racing however the circuit is very very tight and a wooden school hall floor. They also have a controlled tyre, Schumaker rally blocks.

I am currently using a second hand Mi5 mid motor which needs a total strip and rebuild however in the time Ive been trying to get it tuned in I have found a front diff and soft springs have helped a lot with rear shocks stood up a lot more than the front.

So the question is where to start on the T4? I think a front diff will be required, but shall I just try to copy the Mi5 set up or can anyone suggest a good base to start from for the wood floor?

Thanks.