When you say 'legal one family', do you mean that it is zoned for single family residential?

Targeting single family/duplex/triplex/quadplex with 3 beds and 2 baths per unit, and $300K or less.

I was thinking about buying the land (maybe it is 20-30k for the .25 acre lot), finding a builder in the area, and seeing if I could build a ~1,250 sq ft 3/2 single family house and see if I could make the math work. 

They are 2 single family homes worth about 257,000 and 296,000.

The most successful people that I have heard on podcasts and met in real estate know that it is all about getting a single here and there and then going to get a homerun while doing those singles.

Trying to keep things simple with long-term single family rentals til I hit my conventional limit then will try different strategies with different funding options.

Looking for connections and opportunities to fix and flip single family homes around $100-400K.

I intend to get a single family residence, add an ADU, live myself in the residence and rent out the ADU as a studio apartment long term.I have checked my city's ADU laws and long term renting is permitted.Question : can I obtain the REP status while maintaining the ADU while it is in my primary residence?

Adding a single small unit is very expensive development.  

To maximize the number of transactions you’re involved in you will need to:Be Top of Mind when they think about moving - which requires consistent reminders.Be seen as an Expert – which requires a consistent message and Evidence of Success storiesGain their Trust – which requires communicating integritySo, start out by listing everyone you know in an Excel spreadsheet.