Single or 1x9?

I will be doing limited CX racing this year.  Last year all but one of the CX races I did was SS.  In fact my best result came riding my SS MTB.
So...
on this hurricane cursed weekend, when I finally get up the gumption to clean up my workshop, do I set the CX bike up single:

or 1x9?

Either way, I've got some bitchin' pink bar tape!

I need to decided before I wrap the bars.