Hey Jose,
For a tank that size, I would strongly urge you to contact a professional maintenance company that is licensed and insured. There's a lot of potential liability and problems that can arise in a tank of those dimensions. Of course getting it in before the house is finished or even built is a great idea.
Things like this become a whole lot easier when, y'know, there's no walls. That's a 10 x 3 x 4 that we (Batfish) are installing as a room divider.
A big tank like that could absolutely make a fantastic reef tank, and I would consider it. The biggest thing that stands out as a no-way for me is acrylic. Under no circumstances whatsoever would I install an acrylic tank that large, especially for saltwater, and
especially for a reef tank. Acrylic is great because, y'know, I can carry two 55-gallon acrylic tanks by myself. But, once its installed, what do you care about the weight? It's like worrying about whether a Sumo wrestler is wearing slippers or boots. One is a lot heavier than the other, but that's not where the weight is coming from! And like boots, while glass is heavier and more difficult to install, it offers a heck of a lot more protection.
In a marine aquarium, we deal with a lot of organisms that have very different behaviour from what you'll find in a freshwater tank. You might, for instance, want to add puffers or trigger fish. I've had both of these fish spend their days kissing the acrylic. You keep one in there long enough, and you'll get these little half moon scratches all over. I've even had some blennies bite acrylic and damage it. I've had tangs whack the front with their mace, and leave a mark. And, then there are the invertebrates... the urchins, crabs, and some snails that will crawl over the front pane and chew the acrylic up. And
then there is algae. Freshwater algae is a joke -- you can clean 95% of it off with a paper towel. Wait until you're dealing with hard, calcareus algae - including coraline algae. Sure, a lot of the tools that remove it won't damage the tank, but the algae will when its caught between that tool and the glass. Or the glass frustules of a lot of different marine animals that'll just show up. Or the hard shells of some. Or -- well, you get the idea.
This is a big tank, and you're looking to make a permanent installation. Don't use acrylic. Acrylic is great for tanks that are expected to have a short life span. Sure, if it gets scratched, you can refinish it, but on a tank that size, that's a big job. And, if you do just a spot, you'll get a distortion. Plus, there's a limited number of times you can refinish it.
Go with glass. You won't regret it. Sure, it'll be a pain in the butt to install, but .. what do you care, you're paying someone to do it.