I did Pothole Butte after Maklaks. It was not on my list for this trip but you always should keep a back up plan if you have some extra time or one fails right?
I came from Sun Mountain Rd but this is easily accessed from 97 via FS RD 70. Take a left off RD70 at 42.95707, -121.87904. The SW side of the mountain is very steep and cliffs. We drove around the south side to 42.95635, -121.9501.