First off the s17 and the m20 are terrible gear choices for you.
The markup is 27.6% to bring them into the USA
They are really overpriced.
If you have money to spend you want 3-5 cent power this is far more important than gear.
I would suggest you look are the marketplace section for broker threads.
https://bitcointalk.org/index.php?board=75.0read prices on gear and on power.
Feel free to pm me if you have questions.
read my thread on a small farm note my gear mix
we are 70kwatts of gear
we are going to 140kwatts of gear
https://bitcointalk.org/index.php?topic=5099194.0I am looking for some of these
https://bitcointalk.org/index.php?topic=5146263.0I am waiting on some m20's and I have 1 s17
I would not go all out on m20's or s17's my power deal allows me to mix old and new gear.
My risks are greatly reduce by mixing and hedging gear