Could you fit shower on back wall, toilet where door is, then sink closest to you? 

We'll see how this pans out.

That money is not down the toilet.

When would I need to secure items for installation like the kitchen cabinets and toilets, etc.   

Depending on your current rent, I suspect you are likely to recoup your investment in saved rent pretty quickly which makes me think it’s going to end up as a great learning experience, even if the upside doesn’t pan out.Make sure you get clear divorce options for the partnership as living in a rundown trailer scrounging for money to fix it could end up rather stressful.

A landlord will often get a HUGE water bill because the tenant doesn't care, so won't alert their landlord, about a running toilet. 

NY panned out, FL didn’t—and sort of just trusted fate.I’ve long been in love with Hudson Valley/Catskills—SO much is way overpriced right now, but there are pockets I feel strongly are up-and-coming/not overpriced just yet.

This worked well at first, but I started noticing "ghost" charges for random repairs and services: $45 for a door knob replacement, $85 for wall repairs, $65 for a toilet leak, etc.

If you must, get video because with video someone can slowly pan across and capture almost every surface.

Something like pink and green striped sheds, ugly art like gold painted toilets.