purchasing ALL equiptment tomarrow (1st grow)Am I missing anything??

So... Im starting this cabnet grow and Im doing a drip hydro system. I looked at my hydro store and got prices and just wanted to post and make sure I have everything in check before I start growing and then realize Im missing something when its too late.

Space: 5ft tall x 20 deep x 38 wide

Light: 400w hps /400w mh($100) have a flo for the babies
Ballast: Swich-able 400w($200)
Reflector/Hood: Hood with heat exaust hole and glass bottom($100)
Reflective Material: Mylar sheets($20)
Pumps: H20 pump and air pump with 4 inch air stone($15)
Drip System:6 plant drip package ($25)
Timers:(2) 15 minute interval timers ($40)
Meters:Thermometer/Hydrometer ($20) ??ph/ppm meter??
Grow Mediums:Starter Blocks and clay rocks($40)
Res./Tray 20gal res (storage bin)... Tray($5)

Will buy a fan, and carbon filter at a later date when flowering is going on.(and get more cash)

As for nutrents my store has evveerrything but i dont know one to choose. I hate asking because I dont want to sound sketchy. So what will I need some basic ph, up/down 3 part nutrents any reccomendations? Anything else for some big dank buds? Like plant steroids jk

I plan to run the air all the time and the drip system 15 on maby 5 off im not to sure yet. What am I missing? Thanks, any info/comments/suggestions is helpful.

sounds like you got some decent deals. As far as nutrients I use Advanced nutrients 3-part, and it works quite well. I think General Hydroponics makes a pretty similar 3-part. I just follow the nutrient calculator online for my ppms. did you get one of those and a ph meter? those come in handy.

What strain are you growin? cuz your set up sounds pretty solid and you could grow some nice plants

Im not sure on strains, im just going to see what I can get and a buddy hopefully could hook it up, possibly some white widow, yea I talked with the guy at the store and managed to get some discounts for the large amount of equiptment. And yes im planning on meters but were unsure of the costs so..
Thanks for the reply bro

everything sounds good. Ventilation is going to be as big a factor as light, nutrients,smell etc, so gear up dude. I run a 400 w in a tiny closet, 5x2x8. Have carbon exausting stinky hot air hung at top o clos. 150 cfm and a 250 cfm for my air cooled hood. Temps stay more or less what the air is outside of close. Keep my carbon running 24/7. PLants likeee.