this is my first post so bare with me

My husband and I are headed to BKK for the first time for a couple of weeks in November. We plan to split up the trip BKK and some relaxing beach time

My question is how many days is enough in the city? and in what order (city then beach?)?

I keep reading and hearing conflicting reports that more than 4 days is too much.. we are from New York City of that makes any difference,
young but not partyers, more interested in temples and the like...

Any suggestions you can offer would be great!!! Thank you

-clem