As a former TTC student (LPN) - I do recommend the program. Like all programs, there are pros and cons. I liked the somewhat self-paced nature of the program (average completion is about 13 months, but you CAN do it in 7 months - I did and I even had a month off in there). However, many students aren't used to self-directed learning and have difficulty motivating themselves. If you want more specific info about the program, feel free to message me.
My only knowledge of Platt is secondhand, but I have never heard anything good about that school. Besides, if you're planning on continuing to RN you might have problems with transferring credits from there - last I heard they still were NOT accredited.
As far as hire rates, you would have to talk to someone in HR to find that out. As for NCLEX pass rates, check the OBNs list - www.ok.gov/nursing/nclexpass.pdf
Starting LPN pay is roughly 12-18, depending on where you work and what shift, previous medical experience, etc. I know a year or two ago Saint Francis started new grad LPNs at 12.50 (base shift)...
Good luck to you!