He says the stall is too low for this cam but he prefers it to running more converter, but his car runs 11-teens full-weight with a Goodmark steel cowl hood, shifting at 7000 RPM. package, Super Vic, 830 annular 3800 stall and 4.56 gears in a '72 Camaro RS. A buddy of mine has the Crane #118521 244°/252° 112° LSA street roller in his 11.5:1 383 with AFR 210 heads with the Comp. And at that point if you stay roller you should be using a solid street roller. A 240° 0.050' cam is fairly big in a 383 and will require at least a 3500 stall. With an RPM intake and 750 vacuum secondary Holley like a 3310 the above combo should make for a stout street engine. That cam you already have looks great for what you are proposing in your spec sheet, to be honest.
The point here is to not get carried away with sticking too big a camshaft into a 383. As to a 383 cam, while you can run a bit more duration over a similar 350, it is not the same as camming a 400 which can really handle a lot of camshaft relative to the smaller engines, because it also has a huge bore (4.125'-4.185' depending on over-bore) and that also makes a big difference in cam specs.