I will try to address some of your questions:
Depending on your age, you can have or not Medicare Advantage program and that will mean that your 2000-3000 budget is feasible. If you and husband are too young, you are looking at 700 or more a month each for health insurance, that would completly blow your budget.
Get a quote from these companies, which is based on your age and plan:
Triple S
https://www.ssspr.com/SSSPortal Tel. (787) 774-6060
1-877-357-9777 (Toll Free)
MCS health insurance
https://www.mcs.com.pr/es/Paginas/default.aspxMost expats seem to use Tripple S.
Rental depends on the area and can be 400-500 or 900-2000 a month.
Since you never been in PR, I recommend that you use AirBnb and spend 2-3 days in each of different parts of the island to see what you like. Most common areas are Metro, Dorado, Rincon, or the east coast and the towns around Fajardo. Stay at an AirBnb in each of the areas. Driving from one to the other area can be 2-3 hours so you would see very little if you stay in one single place. See the 78 municipalities and compare them to get an idea
http://welcome.topuertorico.org/exploring.shtmlAs to walking distance to stores, cafes, etc, I would say that for the most part you can forget it unless you are in the town centers which means houses almost touching each others and not much yard or super expensive real-estate (2000-4000 a month). Almost anywhere you have to drive even if it is only a couple of miles.
Spanish: Meet the locals, make friends with them, also take this course:
https://www.amazon.com/Learn-Spanish-Fl … nt+spanishRey