mountainair26, the boost driver is sure to work if chosen properly, a 2S boost driver should be able to ramp up output voltage way above 7V. The H1-A and H2-C were treated extensively in Buck and Boost Drivers, Testing, Modding, and Discussion (Pic Heavy).
The H1-A which is sold now is sure to be somewhat different. A couple units I bought after Jensen567's experiments came with their OCV unlocked. Curiously I have one still unused, and its OCV is a hair above 14V (will drive triples 100% sure). It could also be being sold with a slightly different, lower inductance inductor, this was reported somewhere by another fellow.
The ∅22mm H2-C should also work (for sure with a quad in series), but take your time and ask some questions in the above Jensen567's thread.
Oh! MTN boost driver, give it a try. Power it up unloaded, you will be able to measure its OCV with a voltmeter/multimeter on its output leads. If its output voltage raises at least to ≈9V, it'll handle a triple of reds. If not, you can report that and use it somewhere else. :-)