Welcome Daniel. Can I make a suggestion? I don’t know your level of comfort and practice with looping or the other pedals you mention, but maybe start smaller? The Boss is a great pedal and will get you a long way but you do have to learn it. That and the ditto copy get you two loopers, and then choose one or two other pedals inbetween or before one or the other. In the effects loop of my amp at the moment, I have a Blooper, a H9Max, and a Ditto X2, all up on a table (with a pedal on the floor to turn the Blooper record on). Just those 3 things can keep my attention for hours and allow for endless variation. If you are new to all this, keep it simple so you can focus on the tools you have, and then build up from there.
OTOH, if you mastered the Octatrack before you sold it, feel free to make your setup as complicated as you want to start out.