The BRRRR Method is really designed for this - I'd recommend buying the "BRRRR Book" in the BP bookstore and following that strategy - it basically outlines this exact gameplan in the opening chapters

... as I own my RE portfolio via my single member LLC is there a process that I can setup wherein the event of my death that LLC passes to my designated individual along with the assets owned by my LLC? 

This info will lead to several options being removed from possibility.The best software options are designed for PM companies and can cost a decent amount monthly.Here's some cheap options:Doorloop, Hemlane, Innago, RentRedi, Stessa, Avail, Apartments.com, TenantCloud, TurboTenant, Buildium

You can also focus on trendy areas like Ohio City, Tremont, or Detroit-Shoreway, where people want to be.When it comes to the property itself, you don’t need anything huge, and you don’t need to go overboard with the layout or expensive design.

BiggerPockets is full of resources designed to help you along your journey, whether you are just getting started or a seasoned investor.

Please note the information provided below is a layman's definition designed to provide a basic understanding for the general audience.

The catch is you have to use their designated companies for everything including financing, management, and maintenance.

Once you know who your tenants will be, you can answer the property question on several levels, not only SF vs MF, but also location, size, features etcIf you design a car, you start by thinking about your target audience and what they want.

I would be looking at basically “house hacking” the office space as there would be 4 designated suites.

By not allowing designated dual agency you could be preventing yourself from purchasing a property that otherwise checks all of your boxes.