This is something you can do in multiple cities.  

I generally prefer higher since I don’t plan on putting in small claims, it’s basically just for catastrophic loses and the savings in premiums over multpiple properties for multiple years should balance that out if I have ever have to use the insurance.

https://www.qcnews.com/news/investigations/unfinished-business-multiple-homeowners-claim-nc-builder-took-bank-draws-cash-and-left-their-homes-unfinished/?

Do you want a tenant to pay on time... do you want them to treat the property good... do you want them to stay for multiple years... than why not have a conversation with them about putting in the 220?

Given they are going to damage the walls while moving anyway it eliminates their need to touch up the halls and I can usually schedule to have one painter knock out multiple units in a day but even if its a one off sale, it comes across as good service for a small amount of money.In a storage area within the house or garage I will leave an unopened box of each tile, and flooring used in the house along with unopened 1 gallon buckets of the wall and semi gloss paints and one of each door hardware (kitchen and interior doorway.

My advice would be is to talk to multiple investors who have real world, actual success-based experience in flipping over a sustained period.

As you mentioned, it might be difficult timing the sales of each of properties where you can achieve a combined exchange (multiple properties into 1 property / or a few properties).Just a quick note that may be helpful - I work with a group of investors that can help with a combined exchange into a single property and will buy it back once you've found a replacement propertie(s) as the final destination for your capital.

There are multiple ways to invest in RE: single family, multi-family,  long term rentals, mid-term rentals, short-term rentals, rent by the room, commercial, co-ownership, syndications (I personally won't do syndications) etc. 

Legal and ethical implications: Agents engaging in such practices may face:Legal consequencesLicensing penaltiesEthical violationsThese actions ultimately harm consumers by restricting options and potentially inflating costs.The new system, allowing buyers and their agents to negotiate commissions directly, promotes transparency and fair competition.

Depending on your area, it can be a pain to set up multiple LLCs and keep them running.