I have over 7,500 miles on my Bontrager Race wheels. I have always run 25 Cs and have trued them just once or twice, and then only had to touch them up a little. I also weigh about 150 lbs. If the roads are similar to U.S. roads, I wouldn't expect any problems. If they're terrible, stronger wheels might be a good idea. Being fully supported, and with your weight, I think you'll be fine. They may even carry some extra (loaner) wheels. You might inquire.
However, if you don't mind spending an additional couple hundred dollars, get some 32 or 36h wheels as suggested. Bontragers Race Lites use bladed spokes, yes. But, FYI, standard spokes can be substituted without any problems. Just my $.05 (inflation)...