You'll be charged out the ass. There's a baseline electricity usage for homes, if you go above that you'll get charged in tiers.
At that usage, you'll be charged at the highest tier, meaning probably 2.5-3x normal price.
I would expect at least $800+ per month (depending on where you live ofc)
This is true for a lot of places in the US, and maybe elsewhere. It's a retarded system. You should check in with your electricity provider to see how they handle "excess consumption."
As mentioned before, 35A off one line is probably not doable (without expensive, likely invasive upgrades to house's wiring). 17.5A off two lines is more plausible, though it's still borderline dangerous if your lines are rated for 20A, which is quite likely for house wiring. You'll probably want to run it off three different lines. You should check your circuit breaker, first to see what they're rated at, and also to see which lines go where (you'll have to shut them off one-by-one and have someone checking which outlets shut off). After, you want to check the physical lines (it's usually printed all over them in big, black text) to make sure they're rated significantly above what you want to run on them, especially if it's an older house.
To be truly safe, you should probably thoroughly check the wiring and outlets to make sure they're in good condition. Finally, if you use a lot of electricity (electric dryer, multiple refrigeration units, electric heat or A/C, TVs and game consoles running, trash disposal, etc), you should try to guesstimate the maximum current consumption of your house in a "worst-case scenario" (having someone turn on a bunch of high-use appliances while you look at the power meter to make guesstimates would be reasonable), then add 35A to it to make sure you won't be tripping the main breaker, which your significant other would probably be quite annoyed by.
