To better answer some of your questions, here is a timeline of the training:
*Enlist as E-3 for 4 year obligation w/ 2 year extension
RTC (boot), Great Lakes, IL - 2 months
NF A School, Charleston, SC (MM - 3 months, EM or ET - 6 months)
*Auto promote to E-4* (Unless you get in trouble)
Nuclear Power School, Charleston, SC - 6 months
Nuclear Prototype Training Unit, Charleston, SC or Ballston Spa, NY - 6 months
You are not automatically given E-5 at graduation from the C school (NPTU), but you have the option of STAR (Selective Training and Reenlistment) at your 21 month of service time. You re-enlist for 6 years, get a $45,000 bonus and get auto promoted to E-5.
You may or may not have to take the "Nuke test" (or NAPT - Navy Advanced Programs Test), that depends on your ASVAB composite scores for the Navy. To find out what you have:
Add the following LINE scores:
MK + AR + VE + MC
or
MK + AR + GS + EI
If either one of those sets are at least 252, then you are considered "line score qualified" and do not have to take the NAPT. Chances are -with a 93- that you are, but it should be checked.
There are other qualifications that have to be met before you are eligible. Things like little or no police involvement, age, citizenship, drug usage, high school math grades and financial standing. We screen people like this because it's a more politcal field in nuclear power rather than electronic warfare. For obvious reasons, you can't just let anyone walk in an operate a reactor.
It is a challenging program, and most people who join are pushed to the limit. IMO, I think of it as trial by the fire. Being an MM like me is even more exciting, but I'm sure as most people in this forum will tell you it's all a matter of opinion.
Due to restrictions between the different branches, we can't legally recruit you into the Navy while you are bound to the Air Force. Nor can we actively prospect you. But if you happen to come into a Navy recruiting station with questions after declaring your status as an AF enlistee, it's no problem.
What state do you currently reside in?
Hope this helped!