Check draft
Despite what all the books and manuals say, if you were to measure your C27 you would find you have a 4ft 6in draft. If this is a oneway move, I suggest investigating commercial boat movers. Used trailers of the size you need are scarce and exspensive. The average combined weight of the trailer and a C27 runs close to 9000lbs, so you will need a very robust vehicle to move it (I'm using a Chev 3500 with turbo diesel and heavy towing package). The beam of a C27 is greater than most hiways permit, so plan for additional costs there. I suggest advertising on the trailer sailor website, perhaps there is some one in your area that would loan or lease you a trailer and truck suited to the task. Good luck.