As someone who has lived in Texas for the last three years and has JAR CPL I feel qualified to comment. Weather in Tx is either hot and overcast or hot and very thundery. Four weeks is probably a good estimate. I have also flown in to Tyler and looked at the school and they do have nice aircraft and an excellent set-up. Onll reason I didn't go there was because they hadn't got JAR certification at that time allthough it was imminent.