You get used to riding with different lengths, although everyone has a preference I suspect ;) Personally I would rather ride a little short than a little long, probably spent too long riding racehorses
In reference to the saddle question KV, unfotunately I think of all-purpose saddles as no-purpose saddles. They are a mish mash of different styles and allow you to master none - Most of them have a seat reminiscent of a dressage saddle (not AS deep) and flaps that are reminiscent of a jumping saddle (but not AS forward).
The main thing I notice with the saddle in your picture is the flaps - they are not as forward as I would like to see for jumping. Just means that you won't be able to shorten your stirrups much more than where they currently are as your knee will run out of saddle! It should be fine for smaller jumps providing you can have an effective 2-point in your current stirrup length, which I think you should be just fine with.
If you wish to jump higher at some point (3' and above) I would investigate getting a proper jumping saddle which will allow you to shorten your stirrups as needed. Good luck!!