No, what I am saying is that the pto shaft will vary in speed with the engine rpm and is a problem since you can not hold a fix engine speed while driving the tractor. All the tractors in this size will have independent engagement of the pto drive but this does not fix the problem.
I feel your best bet is something like an Cummins Onan Quiet Diesel package genset in the size you need. A cheaper alternative would be a gas genset without all the noise cancelling shields.
Ahh, I see what you mean now. Thanks for the generator recommendations, I might go with the gas generator to keep it cheap and simple.