A knowledgeable landlord can often find and/or negotiate a better month to month price for unlimited broadband internet service, while saving each new tenant the cost, hassle and interim downtime of acquiring new service. 

Duplexes are great starters, but 4+ units can be more scalable and can help mitigate risks on vacancy/turnover downtime. 

If you are 18 and have no job and no money to spend on investing (yes wholesaling costs some money) then your best probability of success will come from getting a job, saving some money to invest in wholesaling and using the down time to learn more about how the process works so you can hit the ground running when you are ready.

For example they are underwriting deals with 5% vacancy on value add deals that have 5% physical vacancy in the market but aren’t accounting for bad debt and down time for unit rehabs so vacancy should be underwritten much higher. 

I would assume one month downtime between such leases as fairly common. 

The plan now is to relax and enjoy life and all the down time.

Prepare for surprises and down times. 

I think that there are a lot of ways that you can really take advantage of this down time.1.

He does not have "down time."  

That way we could fine tune it during the trip.During some of our down time, we took a look at some rundown properties on our own so we could see more neighborhoods and practice some of the rehab analysis that others had taught us.