I would not consider this cheating. It's kind of established practice and putting the possibilities of technology to use.
If you have section A with an acoustic guitar and section B with an electric guitar, would you consider it cheating if you record it one after another because you need time to switch instruments?
IMO, cheating begins when you record something in slices because you can't play it, but it sounds as if it was played in one take and you surely would have to play it like that on stage.
On the other hand, recording is an art by itself. There are no rules creating your piece of art.