Windshield replacement advice- look before i leap

[Elvis 3.0]

Have had a crack in the lower left portion of DS of the windshield that started out about 2 in long and now is progressing to 4 in about three weeks time. I've searched and have been cautioned by a few experiences that I have read about ( dealing with noise, fit, tinting, etc..). I am down in Tampa FL and wondering if I had the choice of the St. Pete's BMW dealer who states that they do the windshield in house v. the national chain etc.. where obviously all they do is windshield replacements, which route should I choose? What should I look out for?

I normally wouldn't ask but I think I have replaced a total of 1 windshield in 25 years.

Thanks