How to Quilt This?

I'm in the long and laborious process of pin basting this monster.  I've officially reached the "Whatever made me think this was a good idea???" phase.  I reach this phase with virtually every large project...and eventually fall back in love with the end result. 

But how to quilt this bugger?  I do my quilting on a Janome Horizon, no long arm here.  The bigger bed helps, but I'm limited by space and skill.  I'm pretty good at stippling, and am leaning that direction.  Will entertain any and all suggestions!  :)