Depends, if once every single cost has been calculated and it was still a substantial amount more per month then I'd go for it
There are some areas in Texas that are wonderful, I fell in love in Austin and would move there in a heartbeat if I could. Bear in mind how big Texas actually is though. I presume you'll be near a big city but you'll want to live on the outskirts to raise a family, nicer areas obviously cost more money
However, you have to consider that there are a lot of costs associated with the American way of life, medical expenses, education, it's also a totally different culture to us. There's a book called "if only they didn't speak English" discussing how foreign the States actually are to us.
Have you visited Texas or even America often? Away from the touristy areas e.g. NYC/Orlando, Florida in particular, it is mind-blowing just how different their culture is. It's not necessarily a bad thing, it will just take a while to settle and feel like you are at home
Sorry if I've repeated much or you've replied to some comments OP I haven't had time to read 11 pages!
Go for it OP, it is a once in a lifetime opportunity. I have several friends who got scholarships to go to uni in America and none of them have come back. Good luck