If it were me, I'd go .070 and checkthe fit. I also agree, that intake may be swapped afterword, and the time to make teh engine easy to retrofit parts to is now. pull the heads and have them cut would be the optimum.
Dave, Isnt the intake on my motor milled ? I have another intake I would like to use, any clue how much I should have milled of the intake surface of the heads ?