Not just another will this work ?

Looks like a solid build to me, the 270HR is a decent cam that works for many combo's, I'd get a 80mm shorty Pro-M meter though, it will read better....

The only problem that I might see is the 1.7's with the xe270hr. I am getting the same cam and want to use the 1.7's too. I already talked to someone from comp, and they said I may run into problems even with the stock valve sizes and pistons. I am going to check it when I install it, and if it has problems then I will just use the stock rockers until I can get other ones.

Stage 1 of your plan seems to have the stock heads I am assuming. In stage 2, you are going to have afr's with bigger valves which presents more of a problem. If the tech guys are worried about me running into trouble with the stock valves and pistons, you will almost definitely have to fly cut the pistons for clearance. Other then that, the combo looks like it will work well.

I agree with Rick in the fact that you should at least look at something bigger like a 75mm pro m or something like that. Will you be getting a new timing chain with that too? You should also probably get an adjustable fuel pressure regulator as well as a higher flowing fuel pump(190, 255). Other then that, that combo is good.

Chris