Mr Wood - I see with a GOOGLE search two hits. One, a previous post of yours where you emailed them and they said they could get larger tanks than 80 cuft.
In your e-mail, does it infer where the dock and depart from? I could ask some local pals to have a look see.
The other GOOGLE hit I got was from the New Jersey retail dive show, "Beneath the Sea". Apparently the exhibited there.
The only reference there is to an e-mail address, not a website. Even the guy heckling DAN concocted a phony website. I am in no way inferring these guys are not reputable, it's just that if you're intending any sort of business nowadays- let's have a website for goodness sakes!
As far as being an Alpha Tester? Like George Carlin (?) asked... who was that first guy and what was he thinking to put his head under there and get a squirt of cow's milk?
He was either adventurous or maybe he could have had a sour taste in his mouth... or got kicked by the cow.
You may have quite a story to tell.
Last fall, in the Philippines, I met Eric from Houston who told me about his trip in the 1970's aboard the Isla Mia, regarded as the first liveaboard ship. I told him that I only watched her sink in 2002. He had quite the story to tell.
If there's a reason to go to an unknown vendor, I'll do it. In Belize, there isn't a whole lot of reasons to stray from the established purveyors... that I can see, anyway.
Having been aboard many boats, I have to raise an eye brow when somebody quickly lets me know they'll obtain, carry and handle "oversized" tanks as your other post mentioned they promised. If they carry through with that for you, that's a cool operation.
Good luck.