Or I would need some crazy excess money.

At that point, I will retire with a very fat retirement account. 

That being said, excessive gunshots is obviously going to make the area less desirable. 

The deductions you are entitled to take do not depend on if you are a W-2 employee or a real estate professional.The only difference between a real estate professional and a non-real estate professional is the limitation of utilizing passive losses on your return.Furthermore, rental deductions as part of the business are separate from the decision to take itemize/standard deduction.Now if the properties are persona, you would need the items to be in excess of $24,000(if filing joint) for you to benefit from taking the itemized deduction.

Hennepin County, Minnesota, et al.  22-166) that the taxing entity must give the foreclosed owner an opportunity to claim the excess between the bid and the amount of taxes owed. 

Both of those things point toward buying more rentals, but only you can determine your comfort level.I started buying rentals at 26 and I paid only the bare minimum so I could use excess cash flow.

Tenant agrees not to park and/or store any recreational vehicle, trailer, company owned vehicle, furniture, appliances or any other property on said parking space or said carport without prior written consent of Landlord.Unauthorized vehicles or vehicles parked improperly are subject to tow.Tenant agrees to follow municipal code for proper parking on the street.VEHICLE REMOVAL.Without notice and without liability, Landlord may order removal of any vehicle from any parking space or carport which is unauthorized to park on the premises, is parked illegally or which remains inoperable for a period of fourteen (14) consecutive days.Any vehicle owned by Tenant and remaining on the property after the termination of Tenant’s right to occupancy may be immediately removed by Landlord with full immunity from damages for such removal.Tenant agrees to indemnify Landlord for towing/storage costs incurred.VEHICLE WASHING AND REPAIR.Tenant agrees not to wash or repair vehicles on the premises without prior written consent of Landlord.Activities that cause excessive water runoff, a disturbance to the neighbors, or a public eyesore, will not be permitted.

Maintain good communication with suppliers to manage expectations.4) Inventory Management: Implement efficient inventory management practices to avoid tying up excessive cash in inventory.

However,  Depreciation and repairs will offset your income and if those costs are more than income then the remainder is used the next year and so on until the property is sold then the excess is used to lower your cost basis of the property when figuring capital gains.As for the LLC question.  

Typically you perform move in checklist noting condition of items in every room, then at move out, if there are items that are excessively dirty or excessive wear, then you note that on the move-out checklist. usually you back this up with photos noting areas of excessive dirtiness.