Green Bearings vs ?

I know this must have been covered here somewhere but I can't find it.

Setting up my 8.75 and am going to replace all bearings.

Trying to figure out what bearings to get. I plan on running this Dart hard with some track time. I'm hoping to do some road race/ canyon carving with it and heard "green" bearings can't take the side loads.

So are timken style the way to go? Stock?

Any body have it straight??? Help!