As for the Mopar cams I have run a few of them and they all ran well. I ran the old 108 LSA .484 MP cam in my old 383 Dart. It was a mild build with sock pistons and 9.5 comp using iron 452 heads. It had the RPM intake and a 750 DP. With a 727 and 3.91 gears it ran a best of 12.31 @110. And it had a Turbo Action 3000 tight 10" converter.
I ran the MP .474 cam in a very stock 340 Dart that ran 13.49 @ 105 capped up on slippery street tires many years ago. It really had great low end pick up with the .474 cam.
I also ran the MP .557 solid cam in a 383 Cuda that was an average build with ported 906 heads and 9.5 comp. It had the TM6 intake and a 700 DP with 4.56 gears and a Turbo Action 3800 converter. That Cuda ran 11.40's @ 117. I was very pleased how all of them cars ran as none were very stout builds.
With the converter you have I would not use the MP .484 as I feel you would need more converter for it. The MP .474 cam should work nicely in your combo.
You could also talk to Dwayne Porter and let him tell you what would work good for your combo as he is very good and knows what he is talking about. Good luck what ever you decide. Ron