A twin 5.7" vac machine will be fine at 50'. That will get you round most 3 bed houses from the front door.
At 75' you will need to do slower dry passes or an extra one to compensate but it is still easier / quicker / safer that lugging a machine around. Just take off the extra 25' when you no longer need it.
You can also be quite inventive with the use of upstairs windows, bungees and protective sheets to help get to far flung corners easily.