Originally Posted by unterhausen
yes, an extension should work fine. You could probably get a little shorter stem and one with a more extreme angle -- there are 45 degree stems. Moving your saddle forward should be a last resort.
Moving your saddle forward is an awful solution to reach problems. The fore/aft positioning of the saddle serves only to position your hips relative to the bottom bracket for optimum pedalling. If you move it forward, you will disrupt your relationship to the pedals, and all of a sudden the bike will feel much slower.
Threadless stems aren't usually made much shorter than 70mm, unless you want to delve into the world of BMX, but you can get one with more rise. Because of the slope of the head tube, raising the handlebars also moves it closer to you.
I'm not sure that will be enough, moustache bars can be a real pain to fit, they have much more reach than a drop bar (5 cm I think) that preclude them from being used comfortably on many bikes.