i am using a similar cabinet based on the ideas of that stealth cab. it works great. it`s pretty cheap to build, especially if you got an old dresser to gut out and use.

you should have great results with it.
you`ll have to sex your mothers to find out about male/female
just take 2 clones from each plant and immedieately put in a 12/12 light regiment. that`s 12 hours light on, 12 hours light off. floros are good lights for this, and are cheap to obtain.they will show sex within a week or so doing it this way.
cloning this way keeps you from stressing a plant by putting the whole plant into flowering mode then back to veg then back to flowering when big enough.

as far as nutes, if you can afford it, i would suggest Advanced nutrients brand
they are specifically created for the growing of cannabis plants. there are plenty of other nutes, but the best results i`ve had were with Advanced Nutrients brand, any of their bloom nutes would work good, but if money and time is tight, i also use a blend of orchid bloom hydro ferts, it`s cheap and you can get it at any lowes or home depot, it has what the plants need for blooming and is pretty cheap, it also completely disolves in water, and has the trace minerals cannabis needs for optimum bud growth.
as far as lighting goes, a good compact floro for the mother side of your cab would be a good choice, as far as the flowering side, i think your original choice would be a good one as long as the heat build up is not too high.
this cabinet has massive air movement and works great.
make sure you paint the inside with a flat white paint, it will help reflect the light all around your plants
good luck, and if you got any questions, just ask, i will try and give you the best advice i can.