So haven't posted on the construction yet but here is what's been happening. Finally got a patch of good weather and they were able to start cutting into the house to open up the window. Turns out there was a water pipe about a foot over from the window. Had to divert that over to allow the window enough room. This of course slowed down the work and now it's raining but they decided to come out and put the window in. Went back for lunch and saw that they are also beginning to reenforce the floor where the tank will be. Made sure to specifically ask for lots of support and explained to the guys how much weight will be on top of it.
The window is 48 inches across which gives me plenty of room it's mostly lifting it over the railing but I have plenty of friends to do the heavy lifting. If the window is in tonight I will upload more pictures.
I guess the next step is designing the sump, polishing the acrylic and figuring out which pump I will be buying. Plus what the stock will be, it's kind of up in the air at the moment.