There are some benefits but it’s not a “must” do type of thing.

The tax benefits of real estate really kick-in with a continuously expanding portfolio.

If you can't find it, adjust to what you can find and adjust your plan accordingly.I bet you'll get a lot of far ranging answers to those two numbers. 

I have a couple questions related to the tax benefit of selling a home you've lived in for 2 of the last 5 years.1.

Here's the huge benefit to passive income from rentals- It's not subject to self employment tax like your flip income is. 

What would be some concerns and benefits to purchasing such a park? 

You could always refinance out of it and collect the tax benefits if you can handle the payments.

I like the small cabins that cater to couples, which have the benefit of being pretty low-cost.  

Should I adjust the CAP to reflect that In my due dIlIgence or is it normal for these smaller buildings (whIch I assume is self-managed) to not include a management fee in the CAP rate?

It also could be that there will be more upset bids until it ends up at the market level for foreclosure sales, in which case your potential $150k margin goes away.If this is indeed a 2nd, you'll have to adjust your numbers.2.