Heads aside you have to figure out how hard you plan to turn the motor vs blower speed. The next problem will be slowing the blower down to run pump gas. Being F2 might be hard keeping boost at a decent level. You could always install a boost controller and spin the blower adjusting where you need it. Heat is going to be the enemy with 93 octane i would use water injection. I don't know if anything has changed but using alky injection with carb creates a rich condition as there is no way to adjust A/F ratio. Next issue will be the #250 valve springs it really depends on the cam specs. I would prefer #800 open pac has some dual springs that can do this. Since it's mostly street the cam lobe needs to be of softer design. With Boost I like spring pressures a little higher than what cam calls for plus compensating for wear that effects spring pressure. As for the heads 205 is a little small on the volume to make decent N/A power using small cam and low compression. I've seen places take the 225s to around 245 cc. I would think the 205 would have enough meat to open the intake some. It would be more cost effective cleaning up the AFR head and get the right springs instead of buying TEA. Someone that could work on those AFRs would be pandhandle performance. Bennett sells 16 ferrea 1000s around $300 and you don't need them on the intake side. I would keep compression low probably around 8 with pump gas. If it was me i would use EFI with two tunes and a boost controller. One for streetpump gas and C16 on the strip to obtain your goals.