Your original post stated a number of critical issues that will limit horsepower. Combined, they will take away a BUNCH of horsepower. I don't see those issues being factored in to the suggestions given in your first post.
That is why I firmly believe you need all the cubes you can build into this motor, plus large port heads, and don't be afraid of a few more rpm. You need to rev to 6600 to 6800 to make your goal, which is equivalent to 9.70 to 9.99 IN GOOD AIR.
My first low deck combo on gas Made enough power to run 9.50s, at 3000 pounds race weight. But I had these advantages. I was 200 pounds lighter, which is at least .2 seconds et, 12.9 compression, another .1, and a roller cam, another .10 to .15, and large port heads. On top of that I was shifting at 6800 because the cam was 283 intake at .050 and .750 lift, with 290 duration and .681 on the exhaust. In short, build what you think is about 75 hp llong for your goal, and if your whole combo is fairly good, you will achieve it.
While that combo I described might have had more in it, it was easily repeatable, not a build that used a number of tricks to build the most hp it could. It is tough to make serious hp, so be very conservative on the estimate of what you chose to build.