1. Start with a LAPL(A). This can also include a night rating.
2. If you subsequently do some 'differences training' on Microlight aircraft, your LAPL(A) will also be valid for flying Microlights - although currently you would still need to maintain the LAPL(A) validity by flying SEP Class aeroplanes no matter how much Microlight flying you do.
3. If you wish to fly outside EASA member states, you will need to upgrade the LAPL(A) to a PPL(A) (not difficult), then follow whatever other licensing rules the non-EASA member state requires.
Conversion of a NPPL(M) to a LAPL(A) is not (yet...??) possible without doing pretty much the entire LAPL(A) course.