As artfull dodger and Norton have both pointed out American OO will not run on HO track. When I started my layout in the video I knew all the available options. Hand laying track stood out to me as the best option in looks, availability, variety and cost.
To confirm my choice I made two small dioramas. As it turned out hand laying track was easy and not as time consuming as I expected and the results exceeded my expectations. I made my layout in two modules so that the task of track wasn't overwhelming or impossibly large. I have since added a third module and can continue adding when I want to grow the layout.
I would still encourage anyone to at least give it a try, make a small portable layout or display. Finding solutions to obstacles that are trivial in other modern scales is part of what makes American OO interesting and fun.
