Switching from 24v motor to hydraulic valve

Hey everyone I’m very new to this whole thing but doing a lot of looking. I’ve got my boards ordered. I think they were short on a few parts I may need help on replacement parts when they get here. I ordered a cytron and teensy. A few things I can’t find very good answers for is. What the advantages of the 24v motor other that more power. I’m hoping to switch to a valve in the future and if I set it up for 24v how difficult is it to switch to the valve?
Next question what’s the pros and cons of 1 receiver with an imu or 2 receivers other than price? Thanks Ryan