Sounds like a lot of fun! Where do you plan to run something like that?
I'm going in the opposite direction with my build. I'm returning my '62 C10 to near stock levels, or at least the appearance of stock. I've even gone as far as to remove the plugs in the Oil Fill Tube and Road Draft Tube holes that are plugged on a '67 engine and installed the Oil Fill tube with breather cap and I'm currently fabricating a new plug for the road draft hole that will accept a PCV valve so I can put the old Chevrolet script valve covers on it. Make the '67 327 look like an old '62 283.
However, I love the extra umpf that the 327 has over the old 283 (rated 145hp) that I use to run in my '63 C10. So, I will look at the specs on the cams you mentioned and see what I can see. I don't mind doing research and changing direction when I've gone off track. My 462 heads are fairly stock. I don't think anything has been done to them at all, so 7k rpm is out of the question for me at this point. I think that 5K is about the limit I will ever be pushing with my set up. Besides, I'm on a tight budget on this build, so wild is definitely out of the question.
I'm thinking that more grunt off the line is good. As it was with the 327 and the SM420 and 3.90:1, I could smoke 1st, burn 2nd, and get a decent scratch going into 3rd. 4th was too tall to doing anything except go forward. It was rare that I would do that, but it was nice knowing that the power was there when I needed it. Usually just used it in a nice, sedate putt-putt mode, but if I needed to get up to speed in a hurry, I could do it. There is no speed shifting an SM420. It was a nice reliable 65-70 mph on the freeway kind of set up, but could do short bursts of 75-80 if needed. I just didn't like to run it for long at those speeds. Besides, the stock suspension on a '62 is not set up for high speed.