Sorry for this late reaction, i did not see you're post till now

The DLC is split into a different leaderboard, so if you submit a full game run for the base game you only need todo lvl 1-147 and in unlimited there is no need for a new save, hopefully i answered all your questions properly

I would like to help you moderate, it will be my first moderator "job" here on speedrun.com, i am from the Netherlands and if you want you can contact me on discord (thedevilsrevenge) or just shoot me a DM here :D