Have permit for 4 nights in Maroon bells for late Sep (25th – 29th)

I have seen some pictures of Maroon bells and have been wanting to do it for some time.

I will do the Four pass loop definitely. Is there anything else I should not miss? I usually do 20+ miles in a day – but, one option is to slow down, enjoy the Four pass loop in 4 days and take side trips – maybe climb some 14ers. Another option is to complete the Four pass loop in 2 days and do something else for 2 to 2.5 days. Any suggestions?

Is it going to be so crowded that it is not going to be fun?

Thanks!