What things do underwriters add back the into DTI? Here's a list

[Joshua Rowland]

Hey BiggerPockets community! I'm 22 and been self-employed for over 2 years. I'm looking to finally get my feet wet after years of research and saving, but the obviously issue is reducing my tax bill, while still showing a good income to the loan officer and underwriter for DTI purposes.

Please let me know if I have misunderstood what gets added back in! Here's the "add-back ins" i've read about on the forum.

1. Schedule C Depreciation Line 13. I own a video production business, so expensive camera equipment will be depreciated (non-realestate stuff).
2. Schedule C Home Office Line 30
3. Schedule C Vehicle Miles P2 44a
4. QBI Deduction (apparently this can show up on two different forms, which form gets added back in if any)?

Am I on the right track guys? Thanks in advance!

(the bigger picture is for me to FHA into my first property in Gatlinburg TN. I'll house hack the first year, then move out and turn it into STR)