If you're still clinging to your record collection, you might find the monk's life difficult to follow. If you want to see what the monk's life is like, without fully commiting, then look for a monastery that accepts lay visitors, e.g. Bodhinyanarama
The dog will have to go to live with a friend, and monks don't ride bicycles. It would make it much easier for me to get around, but the robes would get caught up in the wheels — its really not practical, and would not be permitted.
Exercise is recommended. If you join the Thai Forest Sangha you will get plenty of exercise.