Yeah, i agree. you sound like you're debating between doing a strength cycle and doing a conditioning cycle. if you've got tendonitis in the elbows, it might be worth doing an LSD cardio block for a few weeks.
1. improved conditioning (it sounds like all your conditioning is high intensity right now, so you may be able to increase your aerobic base by doing this)
2. healthier elbows
3. reduced bodyweight (i'm never going to say a person at this height needs to be at x weight, but at 5'10, it might not hurt to walk around a bit leaner. obviously i have no idea what your build is, so take this with a grain of salt).
you mentioned 5/3/1 is boring. i'll agree that a strict strength or strict cardiac output focus will be boring, but sometimes you just gotta do it. spend 2 out of 3 workouts a week doing the boring thing that you know will help you. have fun on the 3rd workout. if it's really annoying, just do some handstands as a warmup.