All of these questions are best answered by your local recruiter. There are variables that need to be discussed to give you a realistic answer. The only jobs you can apply for are current open positions. Your local recruiter will be able to help with that.
You would have to have a transferable skill to keep pay grade and realistically, you will not keep E5. If you have a transferable skill you may keep E4, but probably come in as an E3. I went from E6 to E3 when I joined)
Best bet is to call your recruiter.
Hope this helps,
These poor, plain men, dwellers upon the lonely sands of Hatteras, took their lives in their hands, and, at the most imminent risk crossed the most tumultuous sea…and all for what? That others might live to see home and friends. — Annual Report of the U.S. Life- Saving Service, 1885 Recruiting Website Read here for answers to the most often asked questions about joining the Coast Guard!