If you can put stuff together, kingbrite is where to buy what you want using the "led component menu. Anyhow for a 3 x 3 area, 4 x 288 3000K with red on a hlg-320h-48b will cover that area from start to finish, I run that same setup in one of my tents that is a 3 x 3. You can also get extra boards so one set @ 3000k will be for flower and then get another set of 6500K for veg. And really its not hard to change 4 boards out when you switch from veg to flower. Also if you go the "buy components route" instead of buying a pre made kit, kingbrite will always include all the wiring, wagos, and screws you need to setup your light, Really the only thing you will need to order extra from the led component menu is hangers, but I don't use those cheap wire hangers that most every led qb board company uses as they don't minimize the boards hanging height. I use qb-space-saver-hangers by Smart Chinese QB Modes Inc. They are awesome and are only a buck a piece. Anyway... if you go the component route, this would be your shopping list....
buy 1 of these (
320W Meanwell LED Driver HLG-320H-48B, power supply for quantum boards) $64.50
https://kingbriteled.en.alibaba.com/product/62110555386-812040035/320W_Meanwell_LED_Driver_HLG_320H_48B_power_supply_for_quantum_boards.html?spm=a2700.icbuShop.41413.35.13e87713VTD0Fj
buy 1 pack of these in 3000k (Kingbrite 5 X QB288 V2 samsung lm301b strip 2700K/3000K/3500K/4000K/6500K mix red 660 ) $145.00
note...
buying the extra board, the 5th board, is always a great idea, as its always smart to have a backup board if something goes wrong with one of the other 4 boards. Also as another side note, I have bought over 500 KingBrite 288 boards and many have been running well over a year and I have not had one single diode go out on any of those boards!
https://www.alibaba.com/product-detail/Kingbrite-QB288-V2-samsung-lm301b-strip_62172982157.html?spm=a2700.icbuShop.41413.29.36ed7713aFMjgS
buy 2 of these... (
Kingbrite Aluminum 634x195x10mm Pre drilled Passive Heatsink for 2pcs QB288 quantum board lm301b) $17.50 X 2 = $35.00
https://www.alibaba.com/product-detail/Kingbrite-Aluminum-634x195x10mm-Pre-drilled-Passive_62097245418.html?spm=a2700.icbuShop.41413.9.13e87713VTD0Fj
buy 1 of these (Kingbrite Soldered Potentiometer with Knob for quantum board kit) $3.00
https://www.alibaba.com/product-detail/Kingbrite-Soldered-Potentiometer-with-Knob-for_62205905514.html?spm=a2700.icbuShop.41413.13.78187713ygj9m4
That would run you about $305.00 to $315.00 which would include all the items above, with express shipping, 3-5 days to most places in the world via UPS or 5-7 day with DHL, and it will cover the alibaba transaction fees...
And if you need help setting it up, wiring help, or whatever, just ask, or if you simply need more help buying something different just ask...
Edit:
Space Saver Hangers, (they come in 1", 2", 3", or 4" heights), this one is the 4" one... You can also make them yourself, I like these because they are strong and made out of titanium
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