Seeds, water, grow medium, nutes (not necessarily the most important)
I was mainly focused on the grow cabinet itself
Going to use inline filter?
Smell really wont be an issue in this set up two small plants, no one should be able to smell it unless they are in the grow room, and I dont exactly let people in my house so it is very unlikely it will be an issue.
I have the exact same size cabinet for my veg box. How many plants you thinking? Fans- Going active or passave? Would recommend some speed controllers for the fans, they will make that box howl. Environment where growing? CFL's- are watts actuall or equivalent? Light mounting/arrangement? Fan for planT? Think you will still need it due to # of lights. I have 4 42w and 2 23w and it gets hot in there even with the fan. Would recommend a 120mm speed controlled fan 20-69 cfm to blow across lights and canopy. It's very thin and can be made adjustable really easy. I haves 4" desk fan in there now and its crammed in there and creates a tornado. Just some things to rattle your brain or spark an idea. I have had my caninet up and running for about 2 weeks and am still dialing it in. Good luck,it's a great hobby.
I plan to grow two plants. The fans will be active at all times, I plan on having one blow on the lights while the other sucks air out, the lights all have clamps, i nailed in 2x4s in on all sides to mount the lights to, will the fan be needed since I will have the 100 cfm 4 inch fan blowing directly on the lights?
that's pretty cramped. you may want to consider doing a scrog.....
Yes I was also thinking that as well, I found a screen about an hour ago that I can use that will fit inside perfectly.