She wants to stay and wants her sister to move in.

1) Have clear Goals with access to capital 2) Perform daily Rituals that support the Goals 3) Uniform Branding 4) Marketing Plan (which I call a Massive Action Plan) 5) Conduct Daily Outreach 6) Due Diligence systems (either self-taught or through formal training) 7) Vetted Team in place (all the vendors and partners needed) 8) Workout systems (either self-taught or through formal training) 9) Living Forms Library (you need this to Note Invest at a high level) 10) Discipline to maintain the processes and treat Note Investing like a Business Please feel free to add to the list...

Go as big as I can while staying out of the commercial loans.

If none of this sounds appealing try wholesaling from a distance or working for one of the bigger wholesalers in your area to learn the ropes and add value Best not to take advice from people (especially unlicensed brokers) that either don't know or care about staying legal.

The nice thing about when they become available, the people moving out usually want to sell their appliances and furniture because they are going to a nursing home or to stay with family.Before you go overboard, make sure there is a demand for STRs in your market. 

There are many out there and I suppose some  owners are happy to  make  8 to 10K a year after  expenses and utilizing  the home for their personal vacations, but the investors getting 10%+ seem to be splitting it- one company does just the bookings for roughly 15% Commission (per night or per stay) and property manager does just Property Management.

I served a notice of nonrenewal, they asked if they could stay, I said we could discuss at a later time but they should plan to move. 

Marshal will take tenants but their stuff will stay in your place. and you can`t just throw this outside.

I am very new to real estate invetsting , not sure where to start. i would like to stay local to to los angeles i am also interested in las vegas.

This is a college town in a good area that stays rented.