Need some opinions on cams

Bought a 466 in March that turned out to need a bunch more work than I thought (rotating assemble is balanced, though). Has KB flattop hyper pistons, .032 in hole. Will have new rings (cast), rod and main bearings and I had the crank turned. Also an Edelbrock Performer RPM intake and HEI distributor. It came with stock D3 heads and a Comp Cams 292H cam (244 int/ex dur @.050, 560 int/ex lift, lobe sep 110*, power band 2500-6500). I bought a set of rebuilt D3 heads off of a forum member at the Columbus super swap. Been told that the stock springs will hold up for a while with this cam but I sure don't want anything to happen to it down the road, after I get it done. I do have a used Crane HMV 272-2 cam (216@.050 int/228@.050 ex dur, 518 int/513 ex lift) power band is 1800-5400, lobe sep 112*. It came out of a 429 and didn't sound all that 'healthy' when the motor was in my '64 Galaxie.
I want to leave the heads alone (will add roller rockers) but would want as much cam as the springs will take. Already have $2500 in the motor which is probably more than I can get out of it. I need some advice, please.
Thanks.

For a street engine, you need to have a custom ground to get all the hp you can get with a cam change. They cost very little more.

If you are into using whatever you already have;
Choice between the two ... I would use the Crane with 1.8/1 rocker arms and a decent set of valve springs.

A custom grind would be a whole lot better than either.

Bought it off the other forum less intake, carb and dizzy for $1200, thought I'd tear it down and put it back together for some practice and sell it cheap. It was only supposed to have 1000 miles and 6 passes on it (11.89 inthe quarter in a '92 Mustang), built by an engine builder in Kentucky . Oh well, another lesson learned
Randy...I'll pm you and we'll discuss it, if Adney hasn't sent the bearings yet tell him to hold off, haha.
Thanks guys