In your situation, mostly day sailing
with ability to plug
in over night , electric
may work with or without a genset.
On the other hand, my last boat was a 47' sail catamaran
with twin diesel/electric auxiliaries. Each electric motor
was about 30 hp powered by a 27kw 240DCV genset. The maiden cruise
was from Valdivia, Chile
to Ft. Lauderdale, FL. For long term cruising
in lightly populated areas straight diesel
auxiliaries currently still are more efficient and in most situations a better fit for the job.