Ye Olde Shopping List: See any errors thus far guys? Suggestions?

Already bought:

Rockwool Slab 3x6x48 9
17gal Container x2 10
hydroton, 8 pots+ 33
Tubing 24ft 3
air pump, 15 LPM 25
ONA Pro gel, 1 Gallon 38
EC Meter GHB 11
GH PH control kit 17
General Hydro Trio 30
Humidity Monitor 9
Netpots x8 4
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$189

- - - - - - - - - - - - - - - -
- May possibly upgrade nutes later with:
- Mammoth P $80 (thanks to Growmau5 )
- Cal-Mag of choice...... $20-30
- - - - - - - - - - - - - - - -

2FT 6Bulb T5-HO light $68
(144 watts 6500k)
(to be used for seeds and first 3/4 of veg in 2x2 space)

2ftx2ft Storage Closet $74
______
$331
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Need to buy:

Tent 4ftx4ft x6.5ft $100

Cost thus far: $431
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Need to buy:

!! Flowering light !!

currently considering:

HPS/MH classic combo
400watt 150ish
or 600 watt 180ish
+ extra venting 60ish
+ potential cooling ????

---- ------ OR ------ ----

4xCitizen COB Dimmable @3500K, 300-600w+ $ 540ish
(233 PAR watts @508 watts pull from wall)
(208 PAR watts @440 watts pull from wall)
(140 PAR watts @280 watts pull from wall)

(minor venting w/existing fan)

Leaning towards the COB its just a lot to spend at stage 1.

This thread is especially for NUTRIENT RECOMMENDATIONS and any tips or things I forgot to consider! Thanks!