Sounds like you are on the right trail Dan. But you have alot of work to to do shuttup and ride!
One partner I used to ride with was 480 down to 230 as he fell in love with cycling. He started doing double centuries (200 miles) as well as centuries (100 miles). You can do it too, Man!
Heck 11 miles? I think the MS rides are 60 for two consecutive days. You'll kill a 60 miler 3 months from now at the rate you're going!
Remember some recovery food and exceed your distance by no more than 10% a week to avoid injury and exhaustion.