I just got my Trek 730 fixed up, and before I ride it any great distances, it would help to acquire the essentials I would need for solo rides.
I plan to get a black Brooks flyer saddle, to decide if I like springs or not. One apparent drawback that I've read about, is the problem of accommodating seat bags that hang off the back of the sprung flyer saddle. Here are some Brooks bags: http://sheldonbrown.com/harris/bags/brooks-bags.html
However, even the bags sold by Brooks don't describe hanging them from the back of their flyer saddles.
What recommendations would you make, for a good bag that I could hang from the back of a Brooks flyer with springs?
The Brooks bag-link provided above also describes one of their bike kits, "Roll Kit". That might be good tools for a touring bike, but are that many tools necessary for riding a dirt bike within a 20-mile radius of your car?
What recommendations would you make, for tools to carry, and do these tools come pre-packaged in a "mountain bike tool kit"?