Your mobile home park sounds like a solid investment.

Long term, fundamentally sound real estate shouldn't be returning 20+% IRRs, historically.  

It sounds like if you can keep saving and buying properties in other areas eventually you'll have enough to buy the 2.5M house.

Sounds like to me, Jeff has what you are looking for. 

Stay engaged on the BP forums and listen to podcasts regarding house hacking. 

I plan to engage with and learn from Bigger Pockets community.

House hacking can also be a solid way to offset expenses early on.It sounds like you're diving in with a great mindset and skill set—being handy and managing yourself puts you ahead of the game. 

Ooh, just met an operator there and they're doing really well. https://www.bearbranchcabins.com/Sounds like the A-Frame design is doing much better since that's a trending renter demand.

Also, Fixated moved my closing date a few times, but luckily I didn’t have another deal at risk.Does this sound typical?

The build cost would be a little higher because i would use foam in the exterior walls and also use insulation in the interior walls for energy saving and sound dampining.