I spend a lot of time with my customers, either in person, or by email and phone, and I can offer a lot of good advice.
There can be some significant advantages in buying a standard guitar rather than having a custom guitar specially built.
1) You may be able to find the guitar already built, take your time looking it over and buy it on the spot.
2) If there is a model that you know well, but cant find it for sale, then ordering one the same gives you a very good chance of getting what you expected.
3) It is usually cheaper, and quicker.