What you're doing sounds similar to what I did when I rebuilt my JH a 3 or 4 years ago. I kept it N/A, but the compression at 8.6:1 cuz I was planning on a turbo.
It ran very well, it was completely rebuilt, p&p'd, and balanced. Then I put an old 80's turbo on, and it detonated like crazy. The piston ring lands broke off on all 4 pistons in 3 weeks.
So I sold the turbo and decked the head enough for a 9:5:1 compression and ran like that NA for a few years.
Then i got another turbo and I detonated (at 5psi boost with up to 8psi boost creep-this is what killed me) and broke another piston. 'This one lasted 6months.
Now I'm rebuilding it now with a new head, so it will be 8.5:1 again and i'm getting rid of the boost creep so it should hold up this time
Stock cast pistons still. Hey, they're $100 a set, i can't go wrong
So i think your idea sounds good. low compression 2.0 in preparation for a turbo. it will work fine.