I have very close to the same cabinet, except that I'm a soil guy. I think your plans will work very well. Let me recommend that you get a 6" fan and dial it down. That way, if you should ever need more ventilation power, just dial it back up.

As for strains that would work good with SCroG, I will recommend Nirvana's AK-48. I have grown it several times now (and will again in the future), and it's an excellent strain, easy to grow, forgiving of mistakes, robust, great buds that also *look* great, and the seeds are about the cheapest you can buy (got mine at seedboutique.com, $15 for a pack of ten).