gettin your cylinders ported/polished is the best way to spend your dough!!!!!!!!!
as for gettin your head milled, no need if your gunna get a noss head(great choise by the way!!)
and your gunna want to get your cylinders bored to make a home for your new pistons. Probably .030 over if you've never gone threw a rebuild before.
If you do it right, that f**ker will ripp!!