I think it sounds like a great plan, actually! I admire you for being so willing to pay from your own paycheck to further support your growth in therapy. That's good stuff!
I also agree that two weeks between appointments is a long time- and I am impressed that you work that way regularly. I can hardly hold it together the three/four days I have between my appointments!
As you said, too, this will likely be temporary. But really, you are making an investment in yourself, and the payout doing so will end up being greater than anything else you'd have spent your paycheck on