Swap any two of the three motor leads to reverse the motor rotation. The instructions sheet(s) should explain on how to match the speed controller to the timer. The speed controller is probably beeping because it is looking for a OFF single from the timer to arm itself. A safety feature so the motor doesn't start to run before you are ready. Most speed controllers can be tough what the timer calls an off signal. If you have a good LHS that does electric RC they may can help get it set up.
Ps Your Monocote looks amazing!!

It took me a bit but I got it all set and ready. Brodak sent me a new timer and now that I messed up everything....and then re-programmed it all I have a good feel on how the electric gear works.
Thanks on the finish.
Now...waiting for a less blowy day to go and fly. Stooge ready.
Yup,that is one sweet looking ship. What does it weigh with battery? To get acceptable performance on my Baby Flite Streak, I had to add working flaps.
I have not weighed but I shall. Flaps! Bet that does really get 'er looping. I really built this to just get back on the circle and fly near the house.
Did you add flaps after the build or during.