How would you quilt this?

Maybe you can help me out?   The quilt top that's been hanging around the longest in my sewing room is a very special quilt. 

Tangential, a cumulative queen-sized quilt

Tangential queen-sized quilt for Angled

Tangential is a queen-sized work created for Angled class, an online course I offered in 2014.  I'm rather fond of how it turned out, so I feel a bit intimidated about choosing a quilt pattern, let alone actually doing the quilting.  I think the solution is to have it long arm quilted!  Last night I started looking at edge-to-edge quilting patterns, but I just couldn't imagine any of them being a good fit.  I think it's the irregular block pattern that confuses me.  Maybe I'm being too cautious?  So, help me out.  How would you have this one quilted?  Ideally, an edge-to-edge design would be more affordable, but if you have some specific custom quilting ideas to share, please do.

Thanks for your advice!