If you race below your designated class you’re auto disqualified… So an A rider who’s a known A can’t do that…. but someone who SHOULD be an A can go in and race as a D if they want…
I can’t imagine for a second why anyone would want to race in a class below their actual ability even if it means winning the race. As soon as my stats forced me up into C i was bloody made up with that and went straight out and finished about 2/3rds in C… Which again, made me very happy
Race recommendation… really it makes no difference. I’d pick whatever course suited me more so than the actual series organiser. For me that means anything like London flat, Watopia Flat, etc…. i’d go for that myself, whereas if i were 55kg i’d be entering a hilly route and using the lack of weight for climbing… All the races i’ve entered have been the same, go out hard, hang on, hang on again