What gearing...
 

...is standard? Mine (93 strada) has 15/36. This seems a bit tall to be honest, and no good at all for trackdays. What you reckon? Is 15/36 the stock gearing? Was gonna go to 38 or even 40 on the back, or down one on front.

I recommend 15/40 with a 2-link longer chain, but 14/36 is a close inexpensive alternative that allows you to keep the original chain.