Valve Train Help

I am thinking about puchasing a bare set of GT40X heads off this guy, also in the deal is an E cam......what am i going to need, a combo that will work great on the street....i go to the track very rarely.

also do you think i should just spend the $$ for fully assembled AFR or TF.....or will these heads be a good performer for the $$

thanks in advance for the help!
Dave

Bumpdigity