Well right now the L3+ is not making $650/month. You have to use the most recent number which is the number all the way to the left under "daily" not all the way to the right under "monthly".
I'm based in Southwest FL. Even in the state that is known for it's heat, humidity, and electric rates that aren't low, these things still make really good money.
Like I said I have room for maybe 6-8 L3+'s that I may considering taking in for hosting, just let me know.
I think you're going to make even more money than you think long term. Just a week ago Bitcoin was $2000 cheaper than it is now and I'm expecting at least another $1000 up next year. It's going to be worth running the mine even when it starts to barely break even. You're still going to be getting cheaper coins than people on exchanges
Great setup BTW, just make sure nobody can crawl in through that open window.