... is it very likely that I will get my choice?
Thanks for thinking about serving and joining the ranks of naval aviation. I wouldn't trade it for anything. Glad you two are talking about this. Many things to consider.
Answer to your question - Is it likely? If you use the word "possible" instead of likely, then the answer is "yes, it is possible". "Likely" has so many variables and underpinnings that you can't control, that hazarding a guess builds false expectations (negative and positive).
It's a great question and I've seen a few dual military careers so far. I think you're going about it the right way. You've recognized the wickets to wings AND the RAG AND first squadron assignment. Lot's of planets need to line up. Just about guaranteed that your first 2-3 years will be at OCS/(AOCS?), Pensacola and the RAG.
Three things to consider (sure there are more) and the goal is to inform you two a little bit more.
1. In the short term, you and the husband visit with the Fleet and Family Support Center and ask them about the things you all should consider as you prepare to go down this path. They should say something like, "Wow, wish more people thought like this because there are some things to consider".
2. Ask your husband if the CMC for his command has some time to visit with both of you about what you two are thinking about doing. My guess is that he has seen it too and can offer his thoughts.
3. In the long term, the time and place to let "the system" formally know what your desire is, is when you are in flight training and they ask you what your aircraft preferences are. Be honest and present it as a desire (vice requirement) that is secondary to serving as an NFO. More often than not, I've seen the system try to work it out BUT as you already know the needs of the service can seem to be without a conscience, but so is non-military life (and to a greater extent in my opinion).
Good luck, keep asking questions and please keep us posted on your journey!