Hello,
Recommendation letters alone are not enough for your case. Please contact me by email and I will help you go through these questions.
I have helped lots of people here with their RFEs. Please search "fsa2000" in this forum and you will see many successful examples. If you have further questions, you may email me at: fsa2000@gmail.com and I will help you analyze your case in more detail. Good luck to you.