Oh man, you didn't mention that in your OP so I based my first response on you not being injured.
Most definitely, I believe you should focus on getting healthy first. When I introduced contrast work, I was about 95 percent healed - meaning zero pain but not at that stage where I can perform the highest risk variations. This is why the explosive work done was the med ball slams.
If you're like most climbers or people who do more pull ups than they should, you probably have something along the lines of golfer's elbow/medial epicondylitis. Be sure to look this up because there is a condition known as lateral epicondylitis.
If it is medial epicondylitis, chances are your forearm extensors are weaker than the forearm flexors. Any good physical therapist will be able to perform some tests to determine this.
Once you get an accurate diagnosis, you'll have to focus your efforts on rehab and then strengthening the extensors (the under developed muscles).
It's NOT ENOUGH TO JUST REHAB and go back to normal training. Otherwise you'll just hop right back on the merry-go-round of pain and frustration. You really have to stay on top of keeping the under utilized muscles strong. It's this gap between the dominant muscles and the weaker muscles that is most likely causing the issues. Again, a good in-person exam will confirm or refute this.
I did mine once every seven days. However, I'm not a climber - just a guy trying to get as strong as possible and look the part.
Since you'll be doing so much more other work that taxes your elbows, once every ten days sounds perfectly fine to me.
You have to get healthy first.
I'd suggest that since you're not peaking for anything in particular right now, to take a few steps back, rehab the elbows and shoulders, then focus on GPP work to build a sufficient base. Then you can introduce more advanced work, peak for that climb or boulder problem, take some time off (VERY IMPORTANT), then start again from a higher base level.
Zatsiorsky will describe how he phases contrast training for his athletes and as I stated yesterday, I strongly recommend getting the info straight from him first.