In addressing your line needs, do try to avoid being sidetracked by usage of the dreaded "R Word".....
Efficient sailing has nothing (!) to do with whether or not you ever enter a Race.
Try to avoid any influence of the equally-misused "C Word" either.........
After all, if not actually entering a race, you are probably cruising.
For a Cat 25, the loads are enough that StaSetX should do if you're skint, and otherwise go to T-900 or a modern equivalent.
Remember, that just when the wind pipes up and you really need more pointing and not
more heeling, is just when halyard stretch will mess up the sail shape.
The Cat 25 can point well, and I have seen a fin keel model win a ton of races over other 'pocket cruisers' , but you need to make sure that your sail-shaping controls - like halyard tension, among others - are doing their job easily and efficiently.