Inquiry Submission By Balmain57

My husband and i (both youngish 59 year olds ) will be goung to cambodia for 12 nights the itinary iv come up with is,

Days 1-4 spent in seam reap then fly to sihanoukville en route to koh rong samleon for 4 nights,then taxi to kep for 2 nights then taxi to phnom penn for 2 nights. Does this seem a fair insight to cambodia ? Any advise and info on these places would be much appreciated, also should we book internal flight and ferry for koh rong samloen before we leave the uk.