I would be much happier if the S7 was a 2 board thing. 800-1000w would be very manageable and it would be easier to OC.
I don't want to tell you what to do in your apartment; in terms of getting access to 240 volts. I would recommend talking to an electrician or the maintenance person for the apartments to see about access to 240 volts. You might be surprised to find the maintenance person will be cooperative and help.
Not allowed to do modification here because of assurance thing stuff. There's nearly no 240v anywhere here, either. I'm guessing we're not allowed to because of set of rules and regulation, limits and whatnot.
I live in an multi complex apartment that is owned by a huge company, so their set of rules are pretty strict. Signed a 4 page full of rules and regulation to follow when i got here, lol.
I'll see for when i move maybe this summer.
Are 240v outlet all standard? If i get a 240v big cord extension and maybe some sort of PDU, since the oven socket is 40A, then maybe it would be easy to make use of it on real 240v when i move?