Also have to agree with the majority.
Go with A 4 mil build and do it right the first time. I am fairly certain you can get your cylinders ported , a set of 795 series wiseco pistons and domes to match from any site sponsor here.
Then find a gently used 4 mil crank from members here. You should be around $ 1,000 dollars. You can also recoup a few dollars by selling your stock crank & pistons. The hardest part will be choosing which sponsor to deal with. They're all excellent builders. My personal favorite is Brandon & Shay from Wildcard
Good luck
Troy