It’s not hard, but it’s not easy either. It takes practice, and it depends on what your tolerance for less than perfect is. Simple bends are pretty easy once you get the hang of it, what’s complicated are pipes with multiple bends, it’s easy to do one backwards. (Bending a wire into the right shape can be helpful.) You can cut the pipe, rotate it, and use a coupling to fix that, some people are okay with that everywhere, some nowhere, some only where they won’t see it every day.How hard is it to bend EMT? i.e. how much should I plan to **** up?
Get a copy of Jack Benfield's book, and read it, along with watching youtube conduit bending stuff. Also, remember that one of the big advantages of surface mount conduit is that you can easily add on later....