Sounds to me like they are going to need around 7500 KW with around 8500 KW surge... That oughtta do everything, maybe with the exception of the stove if alot of other stuff is going at the same time... The biggies are not a factor: electric baseboard, water pump, water heater... That is good...

But here's the bad news... Well, kinda... The generator needs to we hard wired into your parent's circuit breaker (fuse) panel and needs to go thru a box that has "teeter-totter" switch in it so that only "line" voltage (from the electric company) of generator voltage goess into the panel... This is a must or yer going to end up with fire hazzardous extension cords all over the place or your going to end up fryin' your new generator when the line voltage come back...

Hard wiring is going to involve an electrican (licensed) because the power company is going to have to shut off current while this is being done... There is one exception to this... Some folks have a main breaker between the pole and the panel... It they have a mian breaker and can shut it off then they can put the teeter-totter switch box in with an unlicensed electrican...

If you need anymore advice on this one, Janie, PM me with yer phone number and I'll call ya'...

B~ (unlicensed electrican)