DIY Bitcoin Crypto Mining including Hydroponic Tent

This is my DIY crypto mining project been working on it for 2 weeks now and finally up and running consistently for the last 3 days. I had no experience in mining before I did this project I did everything but the IT work I had someone come in and set everything up and give me a how too. Its been running smoothly for 3 days, except 1 card being defective and returned I've had no problems with the equipment. We had some IT issues but my IT guy got them resolved. I'm still working on the cooling system I was running 10 degrees hotter with ducting pulling in from room temp into the bottom of the tent. It's now running 10 degrees cooler after I built the funnel from simple cardboard which you can see in the pics. I basically created what I call a updraft system where cool air flows in from the bottom to the top where its collected and sucked out by the fan and ducting at the top. I also unstacked the rigs and put them side by side to allow better airflow and changed the position of the card from the top of the rig to the bottom so they would receive the coolest air. I have ducting running from the tent to the a vent in the window where the hot air escapes the house. My house temp has been the normal 70 degrees inside unless the tent is open for maintenance. Any constructive improvement comments appreciated.

10k Budget

List of Products

1. 7 Nvidia 1080Ti Strix OC
2. 7 Nvidia GTX 1080ti SC Edition
3. 2 400-Watt Evga power supply
4. 1 P3 International P4460 Kill A Watt EZ Electricity Usage Monitor
5. 6 1200W 498152-001 Power Supply for GPU 9 x 6-Pin 1 x 4-Pin
6. 14 6-pin PCIe to 6+2-pin power cables
7. Intel BX80662G4400 Pentium Processor G4400 3.3 GHz FCLGA1151
8. 2 Used Computer monitors from computer store
9. 2 Wireless keyboard mouse combos
10. 2 Gigabyte GA-B250-FinTech LGA1151
11. 14 Ubit 6 Pack Latest PCI-E Riser Express Cable 16X TO 1X
12. 2 Corsair Vengeance LPX 8GB (1 x 8GB) DDR4 DRAM 2400MHz C16 Memory Kit – Red
13. 2 Scan Disk SSD Plus 120GB
14. Hydroponic tent
15. 2 High flow 700 scfm fans
16. 2 Rig Racks
17. Electrician Costs (installed 4 20 outlets)
18. 1 roll of 25ft 8” insulated ducting
19. 1 Arctic Silver 5 Thermal Compound Paste 3.5g Grams w/ ArctiClean 60 ML Kit
20. 6 PSU Break Out Boards
21. 1 Dryer Vent
22. 6 Surge Protectors
23. 14 Rig Fans
24. PVC Piping

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Now the top Cooling Set up(will be redesigned)

Bottom air flow funnel (will be redesigned)

Inline fan ventilation inflow/outflow

Inflow

Outflow

Exterior air ventilation and ducting

Redesigned rig set up