I've built using those specific rims CXP33 with great results. I owned the rims from the time they were new and knew that they were in very good condition. I probably have 2000 miles on that wheel set right now. In fact the rear is on my trainer in the other room. I use them as my backup wheel set to loan out while I work on wheels for friends/family but I have no doubts that I could ride them on a tour tomorrow. Those are solid rims so if they are straight, and with the cautions others have given regarding small cracks etc. you should be OK.