Now, based on where you are at I would suggest you both 1) knuckle down, pick up overtime and save for the next 6 months, 2) start virtual wholesaling & 3) look into rental arbitrage. 

I owe you a virtual pint! 

Does advanced marketing (virtual tours, online bidding, etc) result in more offers? 

The parts cost virtually nothing; the labor getting to the line can be big, depending on how deep it is.

Visit local REI groups, live and virtual.

It has 4 tenants: an MMA gym, art studio, beauty supply shop and recently moved in hair saloon (currently renovating still).

Being a good interviewer is definitely an art.

As wholesaler, you should know you need to spend at least $20K of your own money with Day-Glo signs, cheesy letters in hand-scrawl saying how honest you are and hiring some virtual agents in Vladivostok to make really cold calls on your behalf.At least those are what I hear other wholesalers doing.You might want to consider getting a legitimate RE license and then listing it for a commission.  

Reserves are the most important p[art of rentals.

I would also suggest trying to find a mentor, whether that be somebody you meet organically through local/virtual meetups or a paid mentorship.