Speaking as someone who went through a Bay Area bootcamp (Hack Reactor) it seems to me that it would be more cost-effective to work with a local reputable bootcamp and interview candidates who will soon be graduating. You won't get the top of the class with your salary offering, but I would confidently hire any of the people who came out of my bootcamp's cohort.

You should also consider remote candidates from places where that salary is livable (not SF Bay Area or NYC).

I would say nearly 100% of my bootcamp cohort came in very rough, with little to no production experience and not ready to do any kind of productive work. The bootcamp really started with the basics which we worked on for 10 hours a day / 6 days a week in JavaScript - data structures, algorithms, and many many toy problems. After six weeks of that, we were introduced to Node, then Backbone and finally React and Angular.

I don't think you want to invest that amount of time in developing a curriculum and becoming a bootcamp just to get some cheaper junior engineers. There's a reason why bootcamps are not super-lucrative -- good instructors cost money and there's a ton of competition from other bootcamps so they have to price their product competitively.