Fix, rent, and flip/upgrade helps generate wealth faster, but does take more time and effort today, so that is good for a person who maybe has older kids and/or kids out of the house and are comfortably settled into the rhythm of life and know how to optimally organize their time to accomplish more.

I think option 3 would be optimal (no extra install costs and no need to walk outside to do laundry), but not sure how I would go about implementing that.

When the money printing started and the repo markets went wild in September many investors got out of sub-optimal properties.

You could get peoples email addresses who are interested in process automation and time optimization and send out your thoughts to that group of email addresses so you know who your audience is that you are sharing information with.

I've been considering doing some wholesaling through DMM, and creating a website and optimizing the SEO but I'm looking around for other options that are less labor intensive.

Whether the response is better or worse than texting, it seems optimal to utilize both channels of communication.

However, a tenant putting forth cash helps weed out those who know they have an eviction in their history so I don't have to spend my time with them.You can also discourage people from applying by posting your requirements ("verifiable income of 2.5x the monthly rent", "no prior evictions"), rules (eg: "no pets", "no smoking on the property", "section 8 not accepted"), and details of the property ("street parking", "no laundry hookups, laundromat 2 blocks away") so you don't end up spending time only to find out something won't be compatible with them.Another optimization which may help - do an open house rather than an individual showing.  

They won’t be expecting the same money as their neighbors with the shiny new kitchen and fresh paint.A list broker can help you to optimize the best combination of lists for your area.Good luck

Search optimization is an art unto itself.  

Only a small amount of investors are optimal for residential land lording.