Im in Canada so it seems like Realtor is my best option.

Since the owner owns it free and clear is seller financing an option?

It sounds like you're accustomed to more permanent financing options, but a flip loan is really a short-term bridge loan that acts like a construction loan.

Isn't passing on CC processing fees to the guest in a direct booking scenario also an option on Airbnb?

At 75% LTV you avoid PMI and have significant equity in the property which leaves you with options.

Wholesaling can be an alternative strategy in the real estate market, but its success varies based on Richmond's specific conditions.

So I'm a 22 year old investor just starting out I started flipping my first house this year and I plan on being finished with it in a month or two and I've been looking at how to invest my profits for the most return on investment, I'm leaning towards seller financing vacant properties and master lease options but I want to get another opinion, so if anyone has any suggestions I'd be glad to hear it.ps.

The latter would be the least ideal option for me, but maybe it is the way to remodel the whole unit and increase the rent of the space.

There are a few answers, the two most simple are (1) transactional funding and (2) options.  

Go to your favorite search engine and look for "pay rent online" to get a long list of options.