30 hours flying, for two people, is 60 hours. 60 hours flying, on such short training trips, is what - say 40 flights (at least?). So to do 60 hours of flying in about 40 flights will take how long (with walkrounds, refuels, weight and balance calculations, performance calculations etc) - 80 hours minimum? That only allows 30 minutes for all the preflight, postflight stuff per trip.
125 hours of groundschool (assuming this includes the pre-flight briefs [which it should]) plus 80 hours of flying comes to 205 hours.
To do that in four weeks would mean NON STOP action for 51.25 hours a week, assuming a six day week that would be over 8½hours a day. Non-stop - no breaks for coffee etc.
As was said at a recent CAA meeting - it's just not viable to do consider doing a "genuine" FIC course in 4 weeks.