They give the post office valid addresses to deliver to.

Not to mention delivering proper disclosures and such.I feel like the paperwork is keeping me from taking action.  

You can't go out and become a plumber AND an electrician, so what I'd recommend is to get yourself 'The book on flipping' (which comes with 'The book on estimating' if you order it on this site, from menu above, instead of on Amazon  - although I'm not sure if BP delivers to Alaska - they don't to Canada).

Most mailman carry on the same neighborhoods and streets every single day though so outside of their regular streets that they deliver on every day I don't think they would really notice.

What finish levels do you need to deliver to make your house most marketable?

I was in Portland as soon as it came on.. called my cousin/realtor and mom to go see it.... they gave it a thumbs off and confirmed 4 bedrooms-2 baths.... it was marketed as a 3 bed.. .but with pocket doors.. it makes a clean 4th....so I Still haven't even seen the place... hoping to tomorrow after delivering earnest money. 

-Parking generally not included, so you'd have to park on the street in a non-residential neighborhoodSo - Medfield has probably lower appreciation but might deliver decent cash flow because the homes are fairly low priced, and you could do lower-cost upgrades, like opening up a kitchen wall, taking up old carpets, etc.

How should I ask the tenant to deliver the rent?

When all is done, it comes down to enforcement.Notice to vacate delivered on the first allowable day.Filing for eviction on the first allowable day.Paying for all charges other than rent, first, out of payments received.Lastly, let them know they need to pay on time to avoid this blistering response.

Honestly just figure out the absolute minimum your investors need to make to be happy then under-promise and over-deliver.