My point here is that for the effort of arranging or saving for a year out of work, it might be less effort overall to find a permanent solution; a new career, or at least an altered one. Whatever - the world is your oyster. I just want to say that taking a short term break is not the only way.
Proper full time climbing might not even be possible unless your body is really ready for it. There is time left over. For most folk, only working for a portion of the year, either in one block or in intermittent blocks (what I do) is much better and is all that is needed to continue the upward progress of climbing achievement.
If you are prepared to walk out on a perfectly good job for the sake of climbing, why not negotiate a better schedule as your first resort. If you’re thinking of leaving anyway, what have you got to lose? Naturally it will be an easier sell if you offer the solutions on a plate or point to an example of when it has worked in the short term before. Since jobs come in infinite shapes an sizes, there is no universal solution. It’s up to you to use your imagination, and then just about every other skill under the sun to make it actually happen.
In the end it might be better than a year of fun with the clock constantly counting down. Whatever you choose, DO IT! Don’t leave it as a dream on the table.