I’m in an area with a serious deficit of housing and it’s still taking me at least 3 weeks to secure a good tenant.

I guess I would ask the question in the context of houses that are rentable without the need or even opportunity to value add. 

Well, what would be happening is that your buyer would be buying your house subject to the existing note, since you can't legally sell the property without paying off that note or transferring the debt to the new buyer.

Just started using https://www.turbotenant.com/ it gives you a focal point to house documents, gives you a credit report and some other things but it's still your decision to make with the collected information. 

Just know that it is a "no days off" kind of business and very mechanical.I would suggest documenting your process via video so that eventually you can bring people on to replace the different hats you will be wearing.Keep in mind of these 5 components of any wholesale business.lead generation, deal sourcing, underwriting, marketing, transaction coordination.

If house hacking isn't the best option for me, how would you recommend starting out to build up some investments.

House hacking is great.

You could go the house hacking route with buying MFU, etc.It MIGHT be interesting if you are a traveling nurse to turn your house hack into a short term or mid term rental while you are gone.

Its usually the tenants who live in the lowest tier housing that are most prone to play games and take advantage. 

You maybe be able to manage a house or two from a distance but a house or two will not get you what I think you're looking for!