The tent is 145cms along the side so somewhere in between 4 and 5 feet.
https://kingbriteled.en.alibaba.com/ is where I got all the stuff.
What I ordered:
12set--CXB3590 3500K CD36V 80CRI + Ideal 50-2303CR + Ideal 50-2300AN + Reflector KB-D82-90RF, unit price is $37.6usd per set.
12pcs--Thermal tape: $0.3usd/pcs
12pcs--Heatsink Φ133*H70mm(for 50-65W): $10.5usd/pcs
2pcs--HLG-320H-C1400B: $85.0usd/pcs, It could run 6pcs cobs 36V at 50watts.
8pcs--Wago connector 221-412: $0.3usd/pcs
Shipping cost: $95.0usd by TNT Economy
Had to buy some more Wagos. Not sure if I ordered wire but they sent it.