Congratulations! I too have just started cycling a couple months ago. 30 miles is my farthest so far. I have reached this plateau twice so far. In fact I did it for the second time this morning. I am riding a hack hybrid schwinn and am experiencing some of the same booty pain and hand numbness as you are. When I upgrade to a nice bike I am looking at the Madone line also. I don't know a lot about this sport but I think there will always be some level of discomfort on long rides.