Do it all in a puma
First rig was a puma set up with a frame for multidays or run with thwarts to paddle. Even the older material was light/supple enough for easy rolling and stowing anywhere. It handled OR rivers great, from low water Mckenzie to Owyhee and Rogue.
If you have enough time to tinker with the setup you can bring the kitchen sink... just a smaller version. I had a drop bag bay, cooler bay, rowing bay setup with gear in the back and a splashy ride up front.
I can’t measure rolled dimensions or compare to the mini but if you roll fore to aft a couple time you can get it to the size of a small ottoman.
My puma had a standard floor, sealed would be nice for silty rivers. We took the “green machine” down the Grand as a play paddle boat and we were washing sand/silt out for a LONG time. I don’t think the ballast argument would make or break a flip in a boat that size if your line was off to begin with. They’re so nimble you shouldn’t be that far off anyway.
Hope that helps, sorry the pic is sideways