Another 100 (Attempt)?

I'm signed up for another 100 mile ultra - the Mohican 100 Mile Endurance Run. It has a lot of history in the ultra world - celebrating its 23 year this summer. It also has a lot of hills (14000 elevation gain) and it's also not too far from now (June 15th). There's really not a lot I can do training wise between now and then.
 I have spent the last two weeks recovering from the 63 miles on the C&O from my last 100 attempt. Last weekend I ran the Maryland Half Marathon and in two weeks I will run the North Face 50k. That will leave me another two weeks to basically taper. I'll fit in a long run this weekend.
So the question I'm hearing is - why? Or at least why so soon? And there's no simple answer other than I want to. Or maybe I need to. I'm not going into this race with any great illusions. I want to finish but will be happy with anything over 63 miles. I want to make it through the night and take whatever the morning brings - be it more miles or calling it a day. I want to see the trails in that section of Ohio and I want to run far, test myself and see what I've learned from the last big race. I want to run long and have fun with great gathering of ultra runners. Those are the answers I've got. They're enough. Lets see what the day brings.

Peace,
Eric