You sound more capable than I with mining equipment. I know that by keeping it simple I give up some of the benefits of mining, but for me simply buying a Genesis Mining contract is the way to go. I don't have to worry about maintaining the equipment, electricity cost, and keeping the equipment properly cooled.
I will stick with my Genesis Mining contracts. I know it is not for everyone, but it is simple enough for me.
You could do a crowdfund on SteemIt. I have seen it done before.
I wish you well in building your own masternode.
Steem on,
Mike