You will need to go to MK and take a bus to BC for Cape may or AKL for Boma.
I would leave at least one hour...
You can also take the monorail to EPCOT and do the same-- you can walk to TTC from the POLY and it is sometimes closer than the main house depending on what building you end up in.
taking the bus to DTD and then to the other resort will ikely be the slowest option as the DTD bus service is bad at best for all of these resorts.