I lived in Grapevine TX for eight years, and I am somewhat familiar with Han's school. First off, let me tell you this- IT IS A TAE KWON DO school. They can say whatever they want about being an "all-inclusive" style- but the core curriculum is TKD, plain and simple. They may toss in a few techs from other places here and there- but it is TKD. Not that there is anything wrong with that- just don't let them mislead you. I have been there and I have talked to them. I have nothing BAD to say, it's just they weren't my cup of tea- I got the "McDojo" feeling with them.
I don't know if you are leaning toward any particular style of training, buit there are THREE (3) good martial arts schools within twenty minutes of Grapevine, though they are all Kenpo based (and I have experience with ALL three of them- having trained and/or been associated with these guys for the last 12 years or so). They are (in no particular order):
RICK FOWLER'S KENPO- In Las Colinas, right off MacArthur and HWY 114. Sifu Fowler is a 7th Degree Black Belt in American Kenpo under Huk Planas (9th Degree), and has been teaching in the area for almost thirty years. Mr. Fowler is the most experienced Kenpo instructor in the DFW metroplex. Sifu Fowler awarded me the rank of 1st Degree Black in 1996. Here is a link:
http://www.metroart.com/kenpo/
COLLEYVILLE FAMILY KARATE CENTER- In Colleyville, just south of Grapevine on HWY 26. Rob Hazelwood owns this school, he is a 2nd Degree Black in American Kenpo (Rob and I trained together at Rick Fowlers). This is an extremely nice facility with three full training halls and modern equipment, and a diverse class schedule. They are affiliated with Jeff Speakman's Kenpo Association, and they regularly have seminars with some of Kenpo's greats (I attended a Huk Planas seminar there last month). Here is the link:
http://kenporocks.com/CFKC_HOMEx.html
JAY McKEY'S FAMILY KARATE CONNECTION- In Irving on Beltline, not far off HWY 160. Jay McKey and Tom Hogue are both 3rd Degree Black Belts in American Kenpo, with much experience in other arts, and are wonderful instructors. They offer an eclectic martial art, based on American Kenpo, but with MANY other elements from Wing Chun, Jujutsu, TaeKwonDo, Kali, and Freestyle blended in. Their kids program is outstanding!
http://www.familykarate.org/index.html
Each of these schools have their own distinct "flavor"- I would not hesitate to recommend any one of them. Your best bet would be to visit all of them and see which one "feels like home" to you. The training is first rate at them all, yet each one has different attributes. For Kenpo style training, with these you can't go wrong.