these are adorable...and you did an incredible job..you should have no problem adding your destination and date...i bet you could make it into a circle in and/or around the whole monogram.
ok, so here's my only 'recommendation/suggestion'...everyone or at least ALOT of destination brides do palm trees....have you considered shells or flowers or something less 'DW-typical'??
there's alot of inspiration online....and even on here...maybe a more 'traditional' monogram with a small 'starfish' or a nice nautilus shell or something of the like would be very nice...something sorta like these??
just some thoughts...i'd be happy to help you with the adding the text as a circle, etc...just let me know
until next time, happy planning!!