If you're dead set to have both the light and laser, it's probably your best choice. If the holster availability works out, I'd get the M6x series though. the x series supposedly has a better switch set up, compared to the plain m series.
I've only handled the m6 variety, we're issued the m3 for our G22s. I didn't care for the dial and switch set up on the m6. YMMV.
I also don't care for how the switch works in my prefered method of use, I'll hit the momentary portion of the switch, illuminate the target and fire. On my 1st night qual, I had the light stop working. The battery cover that is part of the switch assembly had partially opened under recoil. I have to slide my finger off the switch as I press or the problem occurs.
I just frankly vastly prefer the surefire products. If I was in your shoes, I'd start off w/ an x200 by surefire (about the same price, maybe a bit less IIRC). Then I'd save up for the crimson trace (grip area) or lasermax (recoil spring guide replacement) for your laser wants/needs.