I recently had a quote from North Sails in Halifax to convert sails to tape luff from hank. $6/foot on the luff.
You can then change your headsail before goin sailing if you expect it to be windy. .. or even change it for Sept and Oct when it is normally windier.
Most boats sail much better with the 100 than the 150 furled when the winds pipe up. Might make sailing more enjoyabl for you!