Bitcoin GPU Farm Setup Guidance

I’m planning a small-scale mining farm focused on Bitcoin and I want to approach it with GPU miners. I’m aware this isn’t the classic ASIC route, yet I’d like to understand every angle before committing capital. I am not set on bitcoin i am open to ideas that offer the most profit. I have been looking at ETH, LTC, or even solana?

I am looking at starting with 1 of the following servers then adding 1-2 every month into our farm.

Potential server specifications:
CPU: E3-1240V3
RAM: 32GB ECC DDRIII
GPU: Quadro K4200 256-bit 4GB

What I need from you is hands-on, experience-based advice that covers pool selection, wallet management and, most importantly, a realistic profitability outlook given today’s network difficulty).

I’m also interested in any optimisation techniques you’ve successfully applied—undervolting, custom firmware, farm-management software such as Hive OS or similar, and best-practice rack layouts that keep thermals under control.

Deliverables:
• A step-by-step setup and tuning guide (driver versions, overclock settings, pool configuration, monitoring dashboards)
• Break-even and ROI projections based on current BTC price and hashrate trends
• Ongoing maintenance checklist and upgrade roadmap for scaling if results are promising

Looking forward to your expert roadmap so I can move from concept to a humming Bitcoin GPU farm with confidence.