Your carb will not be able to deal with 12psi fuel pressure. And if it's running 17 inches of idle vacuum at 650/700 then it must be a really small bit of a cam. The carb needs the pressure to be around 4.5psi at idle, but most Holleys can deal with 6 or maybe 7psi. So please clarify. Are you really trying to run 12psi?
The jets you changed, are only engaged from about 3/8 open on the primaries. At idle and low throttle settings you can take 'em right out and it will change nothing.
Get your fuel pressure reduced, reset your wet float level,get the timing sorted, and your T-port synced up, like others have said, and in that order;and then the tuning can begin.