Of course no one can give you an exact amount,but I 'm from Wichita Falls and asked around.... Here are some estimates.
Registered Nursing- anywhere between $18-24 depending on place
Respiratory Therapy- Hospital only starts at $15/hr, from what I here don't be afraid or grossed out by snot.
Radiology Tech- my boyfriend is the Director of Radiology @ a Rehab Hosp. and make about $5,000/month but pretty boring
Physical Therapist Assistant- about the same as the Resp. Therapist.
Good luck in what you do, but Please, please don't do nursing for the money.