Ari-Ben...you mean Scary-Ben. It is to be avoided at ALL costs!! Did some time-building there (scariest flying hours of my life) and realized what a joke, a shady, and dangerous operation it is. And their Pilots leave MUCH to be desired.
After that awful experience I enrolled in ATP's 2-week CFI course. I felt much more confident in ATP than I did most anywhere else - this is not to say they're perfect, but they'll get you your certificates and an Airline Job real quick...
Buuuut - any Certificate-Factory is going to leave you high-and-dry as far as knowledge is concerned. Just expect to play catch-up while flying the Jet LoL