I will have to agree with the reply above that asks why you don't just stay with helo's. With the kind of time and experience you have in them, i would think any of them would snatch you up in a minute. I am sure they get paid pretty well to do what they do.
There are two companies that i know of that fly helo's from HOU (there are more, i only know of these two though), one is TEX-AIR HELICOPTERS and the other i cannot recall off the top of my head, but it is the next hangar over from Tex-Air. Tex-Air (while i don't know exactly what they do) flys some really BEAUTIFUL Eurocopters. I watch them take in some old faded paint job bird and literally strip it down and replace everthing with new equipment, and then they paint them in some awesome colors and scheme's. I know they own most of them, because they put their logo on the sides, and i am sure if they were just refurb'ing them and selling them they wouldn't do that. Anyway, that is one place to try, and i still cannot recall the other one, but i know they fly long rangers and they have a really nice Bell 222.
Aside from those two, i know there are many oil rig operators in the area, along with many more along the gulf coast. Plus you can try the medical operators... that's what i always wanted to do if i was going to fly helicopters.
I guess like it was said above, there are just so many operators out there with helo's that i would at least try them first, and then if that is just a deadend then think about other options.
Oh yeah, by the way, if you really HAVE to do the pft thing, look other places besides the two that continually come up on this board. I know of at least a couple that you can get twice as many multi turbine hours at for the same if not less than the price of the "infamous" two above. Do some deeper research and you too will find them. But just to save my own rear from the criticism of the others on the board i must now say that " I DO NOT AGREE WITH PFT." Whew, saved just in the nick of time.
Good luck with your future plans, and who knows in six months things could be completely different.