Multi DB database from 16 to 256 DBs

Hey.
hope you're gaving a great weekend thus far. I just need some sort of clarificatioN on this scenario. I wish to try multi-db on a development environment but i want to use the 16DBs for now . Is there a way in near future if i wish to upgrade the site to 256 DBs that i can do it without any headache. I do understand that i will have to re-edit the db-config file etc. Thata okay with that part but the main thing is is there an easy way that i would be able to change the dbs