I am no "engine master" but I can attest from personal experience that just getting a good quench area and setting it real tight helps mid range power a ton with no down side, that being said if you considered getting the silly open chambers filled in and set up a nice tight quench I agree that what you are planning could do real well. Without that it will look like another engine slapped together with whatever is laying around.

Keith Dunnuck did a test on his 440 with closed chamber heads on his 440 and when he got the quench set real tight it made about 80 more HP than the real loose quench, some of the gain was from compression obviously but probably half was from the quench and it was all gained in the range that would help an engine masters motor build a bigger score.