yes, as hotmamacita said, let your house be MESSY!
i was like you, had no help and no family around to help. my husband took off a few weeks and he was busy with the other 3 kids all day. so it was myself and the babies for those few weeks. then, it was myself and the 5 kids and it really wasnt a big deal. aside from getting my kids to school, i did not leave the house b/c it was a big PIA to. my husband took over all errand running and grocery shopping b/c w/ all the nursing i was and am doing, it was easier on everyone for me to stay w/ the babies. and i am totally ok w/ being a homebody. my MIL visited and it was useless as far as helping. she had her naps to take and soaps to watch and was just an extra body in my house. i am just the type of person who prefers to not have people staying in my house for long periods of time-- it makes me uncomfortable.
you can totally do this!! it wasnt even as bad as i thought it would be in my head