Meet at San Marcos. take 12 (Devil's Backbone to 32.
32 to 281 and go to Blanco. Eat.
Go back down 281 to 473 (Kendalia).
473 to Comfort to Center Point. 480.
480 to Camp Verde,break if store is open.
Camp Verde south on 173 to 2828.
2828 to Medina.
Return through Bandera, Pipe Creek on 16 to 46.
46 to Boerne and bust up.

That's exactly what I had in mind JP...... I can get you there......just don't know all the road numbers !!!
I don't think runnin the Sisters would be such a great idea due to the time constraints involved.
Is everyone good with BBQ ? There's a lil place in Blanco (Riley's I think) and the food is not half bad !