With the new 5% down program they are also hesitant to have such a large upfront cost which prevents them from buying a second property next year. 

You may still take important efforts to expand your expertise and knowledge in the real estate market, even when your age may prevent you from engaging in some activities.

Assuming I could qualify financially (primary income plus FHA allowed rental income contribution from additional leased units), when I become the owner of the property, would that prevent me from using a FHA 203b to house hack a second property?

While Federal law prevents prepayment penalties, the lender and loan officer are on the hook if your loan is extinguished in 6 months (tehcnically 6 payments). 

It's there to prevent hiding behind LLCs for shady reasons, including tax evasion.

With the right property manager, a little TLC and preventative maintenance, it'll be a cash cow for you. 

I called the company (mohawk) and they said that they do not suggest "against" installing this in the bathroom, but hey do suggest to clean any spills immediately to prevent damage to the subfloor. 

I would NOT recommend this company to my worst enemy and I hope that I can prevent others from being scammed by WealthAbility by posting my personal experience on as many forums, websites, platforms as possible and by filing complaints to every agency out there that deals with consumer fraud.

However, your pictures aslo show why these installations must be done appropriately to prevent water build up and eventual damage that must be repaired. 

Study up on tenant screening techniques, and implement them diligently.CRITICALLY IMPORTANT: Too much noise & too much mess are the two most common problems you’ll have with housemates, so be pro-active in preventing those problems before they occur.