Piecing it together you can save cash where you can, and spend the little extra to make the parts better. I believe though that summit owns trickflow, they would add/delete from the package to make it what you needed. If I bought trickflow heads, I would definitely opt for the track heat ones, since they have bigger studs, and the better springs.
From your sig, you appear to be on the path for some good power. Mass air would be easier, but it can be done with speed density, you would just have to find someone who could tune the car. I have 0 experience with sd, so cant say much other than that.
What exhaust are you using? Longtubes will help out more than you think, and with no ac-ps-smog- and a elec fan, there is a ton more room under that hood to work on stuff. Im using
bbk, a used pair at that and like them so far, just wish they were cleaner, but cant complain for 100 bucks.
On the rockers, you dont have to buy the trickflow ones, comp cams are good to, but just as much, thats the ones I used. I shouldve tried out scorpion rocker arms, not their cheapest ones, but the good ones, which are still cheaper than comp cam and trickflow, and I hear that they are very good rockers. Pretty sure they fit tfs heads, but heard of some rocker arms having problems on tfs heads, just may wanna pay some attention to that before spending the $.
Since the motor is rebuilt, the timing chain new, should be. Good to have a newish one in place when installing a cam, and a adjustable one at that helps.
You can probably get by using the stock valve covers if you like, just need to clearance them some by removing the baffles for rocker clearance, most are easily cleaned up and easy to paint.
From the first post, the heads will not come with the gaskets you need. You will need to buy some. I used the common fel pro .39 inch thick head gasket for mine.
How you like your PA starter? Im gonna need a new one soon, and looking for a mini.