I'm using one of those as well. I kinda went overkill on my kit. I got the Scat kit with forged crank and pistons. I'm planning on spraying it so wanted the extra strength. Kinda why I'm leery on the factory bolts
1. If you were planning on spraying it, you should have gone with studs in the first place. I would at the very least use ARP bolts, as they are far superior to the factory bolts.
2. You really don't need a windage tray. Many cars are running hard without...mine for example doesn't have one, and it runs low 10's.