The YC money is more than enough for the items you mentioned. That is, given your bills don't include an existing mortgage or payments on your new 911 Turbo.
Btw, if you're applying for the coming session, it's in Mountain View, not Mass.
Btw, if you're applying for the coming session, it's in Mountain View, not Mass.
I'm not so worried about living expenses, but rather how to answer the relevant application question.