RE: stay on cycle or come off
cut while in pct and you'll be pi55ing away your gains. bulk or cut or lean bulk.
going from a bulk straight into a cut wthout meds is not a good idea at all.
stay on til the day you go away, then come back and run pct. 12 weeks on test e at that dose is pretty standard and wont do much harm at all.
if you want to cut up a bit for your holiday introduce cardio. seems you didnt research your cycle enough to start with.