Look at the head flow at your current net valve lift(.600) versus what you will have with about .725 lift (.750 lift gross). A decent roller for your combo IMHO would be about 280 to 282 at .050 intake, 288 at .050 exhaust, on a 110 LSA probably in at 108. The 110 LSA is that wide to accommodate the long 288 exhaust duration and keep the overlap about right. Less exhaust duration might dictate a cam of 108 LSA. These numbers are coming from all the recommendations I have gotten for my 528 with 440-1 heads. I am not that much bigger than your motor, so the cams ought to be similar. Also, the smaller the intake valve to cubes, the narrower the LSA needs to be. The reason is the poorer the heads flow for the size motor, the more overlap is needed to get the intake flow moving.
The first cam I had in the 528 was an Isky RR735.
It had 280/288/110 specs, .735 intake lift with 1.5 rockers. I had 1.55 ratio rockers on then for .761 gross lift. That cam made 847 hp on the dyno, and the car went 8.77 at 153 on radial slicks at 3,000 lbs. That would be about 8.85 on bias tires. You have a lot of power there, it just needs to be unlocked with a cam and compression. I run 15/1 with alky, and wouldn't run less than 13.5 or 14/1 with gas.
I am also a fan of very loose converters. They flat work for me. I got a $1500 lesson on that this spring. I tried another converter, set for about 500 rpm over peak torque. The car slowed over 2 tenths!. My current converter flashes to 6600 and I shift at 7100, which I know is very loose, but it is at least .05 faster than it was flashing to 6,000.
You run a glide, so being loose enough would be even more important to you, IMO. I run a three speed.