don't buy things that give you "bad" credit...like a depreciating vehicle.

vehicle mileage is always a good dedection, assuming it's not a "company" vehicle.

Since we use our personal vehicles for doing rental activities, and have racked up quite a bit of mileage - there is a section in Schedule E instructions about unreimbursed partnership expense (https://www.irs.gov/pub/irs-pdf/i1040se.pdf).  

When is it legal to get rid of personal property/tow vehicles?  

Could perhaps be interpreted as being mortgage fraud.This is definitely mortgage fraud.For self employed people, you need to deduct your normal and necessary business expenses.Where you have a little bit of wiggle room is in the personal expenses that you can choose to make business expenses such as Home Office, Mileage on a personal vehicle or the portion of your cell phone or internet bill that you allocate to business. 

I know purchasing property from a relative is prohibited inside a retirement vehicle, but want to make sure it doesn't apply to the solo 401K loan as well.   

That number should be on any quote you get from them, any promotional material, any professional vehicle.

blank.Additionally, he did not list any personal or credit references (or emergency contact, or additional occupants, including children - it’s a 3/2 - or vehicle information) in his MSHB application.

My personal one also covers all of my vehicles, my boat and my primary residence.I use Strategic Insurance Service in Clearwater, maybe you can give them a call and see if you can get a better quote.

For out of state owners, when you're in town, meet with the neighbors, pass around your business card/contact info and let them know that they are to call you with any concerns - noise issues, trash violations, new dogs, too many vehicles, etc.