A high property tax rate will increase the taxes more quickly as a percentage of total expenses when the property value increases.

You’ll still be personally responsible for the debt and it will still show up on your credit report/DTI if that’s what you’re trying to pull off.You’ll increase your interest rate by 2-5%?

I’m especially interested in value-add opportunities where I can renovate and increase equity.I’m here to learn from experienced investors, connect with like-minded people, and share my journey along the way.

Incredibly poor business deal. 

I do not understand your remark as related to the DSCR loan.  2 ADUs are not allowed by f/f conventional financing but is not always enforced.Fortunately if you stay with the current tenant without a refi, by the time you pay principle it is likely the rent will have increased enough to absorb the increase mortgage payment. 

They will still do the occasional flip, but mostly when a deal presents itself AND they may be between new construction starts so need to keep their teams busy.

The property's appeal increased dramatically, attracting numerous potential buyers.

It's always important to screen anyone you are doing business with. 

We also have many unique buyer incentives where an investor can get up to a 10% price reduction to come into immediate equity, or get that 10% as a cash back at closing to reduce your down payment and increase your ROI, or buy rates down into the low 4s on 30yr loans to maximize cash flow.

The BEST method for real estate investing is very simple: increase earnings, reduce expenditures, save, and invest from your own funds.You should focus on increasing earnings and learning how to manage your budget.