What should I set my fuel pressure to on a 347 stroker?

Its a an AOD with 19lbs injectors, 190lph pump, fully upgraded exhaust with no cats, 347 stroker with a 9.2 compression, stock heads and intake but with 1.7 rr, and a ram air kit. I also have an a/c and smog delete. I have it currently set at 45psi with the vacuum off. Is this too much or am I just right?

I had it at 50 before but someone told me I was crazy on the stock 19lbs. But I figure since I have a bigger displacement I would need more fuel pressure. I dont know if I can upgrade to 24 on a SD system, I think its a hit or miss. I need to change my radiator first before upgrading to mass air, and my car runs okay right now.