I personally ran a mining farm which was both ASIC and GPU about 1/10th that scale for about a year, and all I can say is it is a full time job. You will run into problems you can't even imagine, you will have setbacks which will eat into your profits, and you will have to be constantly "running" the operation not simply from a day to day operations standpoint; but from a technology ROI, month by month, standpoint. This includes equipment lifespan; return on investment of hardware, factoring which technology to buy, when to sell, replace, upgrade- as Bitcoin's difficultly will continue to rise you will face an ongoing uphill battle to either re-invest any profit you see (which you may not) in either adding hashpower to your farm or upgrading to faster and more effecient mining hardware.
The only way I would personally invest in that kind of start up in this day in age is if aside from your up front capital which you seem ready to risk; would be do you have an absolute advantage over other miners in some way (such as zero to low cost electricity; commercial space that is current locked up that is not in use which can handle not only the electrical requirements but also the heat output, ventilation; etc, or you have a deal no one else can get for the hardware. I say this because it's a different game now. I started my farm after the major crash, when there were months when difficulty was stagnant or actually backtracked; when Bitcoin's price was in decline- (when I ran my farm I "believed" in BTC when so few had even heard the term 'Bitcoin'); so it was more of a leap of faith and I didn't risk more than I could afford to lose. Today's landscape is much different...
The waters are bloody, it's no longer a blue ocean strategy at least in terms of mining BTC for profit... (unless you are already doing so); the coin has halved; difficulty is sky high; and it's still a very risky investment.
I'd recommend you write out a formal business plan, including a SWOT Analysis at the very least, and determine if you even have the edge you would need to even reach a level of profitability. Factoring all aspects that could affect the Bitcoin economy; including changes in technology; political influences and government interventions on a global scale; power costs, labor costs, including procuring that much hardware, assembly; upkeep, turn-over, teardown, and disposal or sale on the back end. And last but not least, taxes need to be considered depending on your country of residence and how they will tax any BTC generated.
Mining BTC will put you under the microscope when it comes to taxation. Trust me on that. I think today it's the biggest Red Flag out there.
Strato
Strato - thanks for sharing your experience with us.