"Academies" such as ATP and Epic tend to be overpriced in my opinion. While you could get through your training quicker at a pilot mill, quicker isn't always better. I suggest looking into getting your Instrument Rating at a local FBO (should cost substantially less) while you continue to support yourself with your job. However if you're dead set on one vs the other, I would chose Epic as I think their training and end product is better.

Otherwise, I'm located in KEVB (where Epic is) and provide flight training, if you're interested.