Sit down with a GOOD online compression calculator. I like the one on the KB (United Engine and Machine) web sit. If you don't know all of your specs, FIND them out. Enter them in the calculator and see what you come up with. Start with the blueprinted spec for deck height (9.6) and see what comes up. Use the KB 107 as a base line. You can look the specs up right there on the KB site. IMO, if you are over 9.3:1, you will have trouble on pump gas with iron heads, unless you run a cam with an exaggeratedly late intake valve closing point....in other words a pretty radical cam. I would try to plan it all out like I have described above first. You can do all that without ever spending a penny.
Most of these people who tout high compression on pump gas with iron heads have never tried it and are parroting what they've read here or in car magazines. The truth is very easy to get to. All you have to do is look back at history. If compression was much more over 9:1, there was a sticker somewhere on the car that said PREMIUM GAS REQUIRED. And that was back when premium gas was 100 octane. Super Premium was 110. A TRUE, blueprinted 9.5:1 engine will struggle to run on any of today's pump gas without a cam that's really "too large" for a street car, or a limited timing curve, or both. That is WITHOUT quench.
Go read IQ52's low compression 440 thread. Look at the numbers he got from a 440 UNDER 8:1 compression. I think he proves that for the most part on the street, high compression is for bench racing. It's all in the heads.