I take it you have headers? 10 pounds seems right on the money for an XP, headers build with rockers and so on. Honestly, it looks like all you need is injectors and a tune. That should be a priority as soon as you get a new block in there. Should make a pretty fast car, and solid build.

Now if your heads aren't set up for the lift, that's a whole new can of worms.make sure you have at least 90# springs in there with the XP cam, and get rid of the 1.7 rockers, or have your heads clearanced. I'd buy your 1.7s and you can get a tune with the money.