OM, you shouldn't run into any issues in RB cleaning up the tracks or having any sync issues. Very straightforward in RB.

I went to your site and d/l'd "Raise the Flag" and ran it through the Splitter in BIAB. I only used the vocal track but I had no issues syncing with BIAB and replaced several heavy metal styles and soloists with your vocal track and it set in the mix quite satisfactory. There was a few artifacts in the Stem separation but that was taken care of with the Audio Editor.

You should be able to have a lot of fun and no issues using RB.

BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.