opps... i don't even know they cost that much!
i used to install a climate control to my S13 and it only cost $3-400 included parts.
traction problem, maybe some bigger rims so u can fit wider tyres?
255" S-03/ AD07 for daily
i heard there is a product from nismo can reduce the weight of the clutch, which might help u to control the release a bit easily? my friend installed it to his GTR with triple plate ATS carbon clutch and he said it feel very little different to stock.
usually i will recommend people to get a new car. but yr case, u have spend SO much money to the car and it's just a real waste to sell it now.