In reply to andork123:
When next buying, i'll have 2 to 4 short.. i alwaws put short on the 1st bolt, just reduces how close to decking you will be from a fall above it, by only upto 15cm, but it might matter. Another 2 or 3 shorts could still be handy on sport routes with ledges or other obstacles u could hit.
I thnk the rest could be long ones, but at least 2 for the lower off bolts, and maybe 2 more for easier clipping, but i might go with making all the clips easier, as it is sport climbing!
Long or medium are sometimes useful to stop the biner being crosloaded on an edge, as some bolting hasn't taken that into account with short draws.
Rope drag is rarely an issue though, you'll hardly ever need long draws for that reason.