The catch is the self-sufficiency test. 

I'm an avid reader of BP but I'm also a self-taught investor like many of us here, barely 3 yrs deep into REI, so I'm certain blunders abound.

@Jessica Cheung - I would first reach out to your local Oxford House chapter and introduce your self.

With some of your concerns I'm wondering if they are a good fit for you and if you're feeling comfortable, or if self-managing would be a better option. 

Absent that, the big differences will be which forms you report the income, your ability to deduct business expenses against the income, and applicability of self-employment taxes. 

Here the IRS has a reason to challenge your credibility and the credibility of your self-produced numbers.

I am new to the Denver market and am getting ready to get pre qualified for a conventional loan my self.

My plan was to "self-perform" a land contract by filling out a purchase and sales agreement for a land contract that specifies I will take over the mortgage payments, get authorized on their mortgage, and be authorized essentially to fix up the property and eventually sell it on the MLS since the land contract will give me that control/equitable interest.

We are partially owned as of 2022 by Sumitomom Forestry, which means we have no bank debt and self fund all our building projects.

This is ideal for investors with multiple properties or self-employed individuals, as it allows them to qualify based on the cash flow of the asset rather than personal tax returns or W-2s.2.