There' a list of sailmakers as long as your arm. Which to choose for a shortlist?
a) Ones near you who can visit the boat to measure - and afterwards to help fit and adjust the sails, show you how to get the most out of them, and subsequently perform repairs should they be necessary.
b) Which of those has a good reputation for the sorts of sails you require? Virtually all lofts will claim to be able to produce perfect sails for any sort of sailing, but that's marketing. Some are better at performance sails, some at coastal cruising, some at bullet proof bluewater.
You should then be down to a shortlist of two or three. Talk to them. Ask for prices. Which of them do you get on with best?
Go for it.
Next time, it'll all be different.