As a plumber, whenever you enter a house (especially if it's in disrepair), take note, strike up convos, tell everyone you are interested in real estate investing. 

As a owner of multi-family properties, it's essential to strike a balance between maintaining profitability and providing fair and affordable housing for your tenants.

That information strikes me as false from everything I have seen. 

Striking a balance between preserving the architectural heritage of these structures and creating modern, livable apartments is vital to the success of such initiatives.As we delve deeper into this transformational phase, it becomes crucial for city officials and developers alike to collaborate effectively and navigate potential roadblocks.

If you really strike out start your own BP meet up.

I would strike that as well.

Way to capitalize on the IO payments and then strike when the IO period was over! 

That would be your STRIKE price so start at 10% below that(which you already had in mind at a $174k purchase) and make sure you do your best on educating the seller about why seller financing would be beneficial to him. he would ultimately get way more for the property. his capitol gains is spread out over 20 years or whatever you negotiate and worse case scenario if you do default he keeps your deposit and gets the properties back via foreclosure.

If disaster strikes and you have to make major repairs you wont have the option of lowering your payment if you're locked in at 15 yr.

If someone expects to buy a home anywhere and not have a babysitter watch it for him/her, disaster will strike!