OK home miners, I shoved an s9 into my air intake and it's been hashing hot air into my furnace for about a week. Tomorrow, I get the last piece of hardware to install my 50 AMP circuit, so I should have 2 s19s blazing up the house in this way.

The question is, where should I cut the hole for these guys? I'm assuming the best bet is low to the ground, but each of them is going to have an 8" shroud and I don't want to cut up my intake more than necessary as I will need to switch everything up in the spring.

For those that are about to say, "go emersion," I will, I will, but I don't have the money to just yet. Also, I'd love to reproduce this for friends and many of my friends won't be into spending thousands of dollars on an emersion tank and pump right off the bat either.