Sure thing I'll Make a list. By the way though, I knew this would be capable of way more light than I need in there so I went with 90 CRI chips for the added infrared even though they don't put out quite as much light. In this case I found it worth the trade.
4X Part number (IceLED 550) Heatsinks with fans. $16.75 each from Cutter.
4X 3590 adapter plate for CXB 3590 for the heatsinks...(I had to slightly modify). Part # (Cutter-3590Adapter plate) $4.56 ea.
2X Cree cxb3590 3000k 90CRI 36V part # CXB3590-0000-000N0UBD30G Cutter $41.87 ea
2X Cree cxb3590 5700k DB bin 36V part #CXB3590-0000-000N0BDB57E Cutter $37.28 ea
4X Ideal 50-2303CR Ideal Holder
50-2300AN Ideal Reflector adapter for Angelina WX reflectors
4X F13838_ANGELINA-XW Wide Beam 90 Degree reflectors.
Now for those last 3 items; the chip holders, adapters and reflectors I already had them on hand or I could have just bought the kits they have for the CXB3590 that have those 3 parts in a package for $9.57. The kit is part number CXB359-HCDR35G-K1 from Cutter.
For the driver.....
The driver I used is simply overkill. I only used it because I have a few extras laying around. This drivers is better suited for 6 chips. It was Meanwell HLG-320H-C1400B. It will power this unit at 50 watts per cob which is perfect but it can drive way more than 4 at 50w each so this would be a waste of money for a 4 cob situation. For a small 4 chip unit like this you should look for the Meanwell HLG-185H-C1400B. It's $50 vs $100 for the one I used and will still provide 50 Watts each COB.
I used 1X 100k ohm linear potentiometer. This one tested at an acceptable 99.4Kohms. $2.00
Digital power display $10 online. Displays total wattage I'm using, wall voltage, amperage and total power.
Aluminum framing and 1/4" large rivets and 1/8" rivets from local hardware store. $20
All in all someone should be able to build this light start to finish for about $350. It will last forever, use less power to do the same job, run cooler, very cool and provide a real "full specrum". The power is FULLY adjustable from 0-50 watts per chip. In my 2x2 tent running them at 35-37 watts each is more then enough.