Read this post, it should help a fair bit (including following the links therein) Purchasing new mainsail and confused...
One of the key sections to it has to do with having your sails professionally cleaned. Including their getting whatever TLC that they require, as well as the option to have them re-resined. An option that's definitely worth researching, as per the thread.
Sail Cleaning and Sail Restoration from Sail Care
Also, do a few different searches on here, using the key words; sail laundering, & similar. With a bit of diligence, you'll turn up a lot of helpful wisdom(s).
post, & how often racer's really replace their sails. Such a thing is Gigantically variable. And much of it too, is based upon the boat's size, cut & construction of the sails, the boat's righting moment, how competetive they are...
As, for instance, on the 12 meters, used for the America's Cup, we could wear out a suit of Kevlar sails, in One Day. To the point where sometimes they were delaminating, or torn/blown out by then.
And even some of North's new gen sails need quite frequent "tune ups", or replacement on boats the size of yours. So it really depends. AKA there's no free lunch, or magic fabric
But with good care, which includes having them regularly gone over by a good sailmaker
, your sails should last you quite a while. Particularly on a boat the size of yours.
Especially up there. Unless you're a gale sailor junkie
PS: While furlers are handy to have. If it's blowing, take off your big genoa
, & put a smaller one onto the furler
prior to leaving the dock/just as you're hoisting sail.
Your sails will last a LOT longer, as partially furled sails really take a beating in higher winds. And used, heavier weight/smaller sails, are fairly inexpensive.
Anything more than rolling a sail up more than 30% is when it's time to change down. Or switch to your Solent/Staysail.