Without pretending to know that much, from what I've read on here and other sites, IMHO I would be spending my money on fixing what performance parts you have invested your money in so far. It appears to me you would get better bang for you buck researching alternatives to just more juice. I also am of the belief the simple oem carb will do it's job in the majority of upgrades besides stroking, and not many go down that path.
Like I said, I can't speak from experience but I can recall Reading comments from at least a couple of blokes who admit the purchase was not worth the money, let alone the effort.
Of course, if I saw a before and after dyno printout, I'd be much more likely to see the merits.
staffo