hi pixxel have you ever concidered ob? i am a cna (also in chicago area) and went directly to labor and delivery upon completing the cna program. it is awsome :d i absolutely love my position, have learned tons of assesment, surgical and fetal monitoring skills, which have helped me with clinicals in school (i am on my first rotation). to top it all off, i a priviliged to witness and participate in the birth of a child. this has been an increadible experience for me and invaluable. at the hospital i work in now, the scub techs on l&d are not required to be certified (no extra classes) and are taught on the job. i think the same applies to a few other area hospitals. it is scarry at first because you become so vital to the outcome of this family when there is an emergecy going on. but it is very satisfying. it is a critical care area and you are very involved with the patients. anyways i have gone on enough, but if you have an interest i highly suggest looking into it.
btw i know that radiology requires a two year program to become an xr tech and may be longer for us/ct/mri. also there is not a lot of pt care. where i am at you can take a few week course in phlebotomy, and would be valuable. you could also look into different care areas like er or or, maby ccu/icu you will learn alot of assesment skills in these areas.
what ever you decide, good luck