That sounds like a fine plan!
The earliest generative compositions were done using tape loops, certainly no ‘need’ for synths to do it. The way I understand it, you create ‘cells’ of pregenerated sounds and then manipulate those cells in real time, or add randomness to them.
A great piece of software to look into is NODAL if you’re interested in an inexpensive way to do a deep dive. NODAL plus a DAW running soft synths can generate a never ending composition,
https://nodalmusic.com/
The first section of this song was written using Nodal, a Mother-32, and a single delay.
You might find this helpful as well,
https://teropa.info/loop/#/title