Check out electronic billboards which are affordable compared to static printed boards.  

That said, I think you need to do some more reading here on BP to understand some of the concepts you are just brushing up against.  

Is it normal to see cashflow start out negative and then go positive over time, as NOI increases while debt service is static?

You also might want to brush up on your negotiation skills so you can approach them with confidence.We can't use bandit signs here in Philly but if they're legal in your area a good trick is to look up traffic patterns on Google maps and place them at the most congested intersections in your market area.

You need to brush up your definitions.

I have been brushing up on my Argus Valuation Skills, Esri Business Analysis, and restudying my Accounting Books.

*just heard back. see belowDetails on this piece:Asking price: $480kAcres: 264 acLand Type: Forest/Timber Other details: There is about 80-100ac of area that is meadow type land with smaller trees/brush, good for building pads.

Too many first-time investors are trying to turn static into dynamic.

Everything I brush up agains turns to gold!

Worth reading in my opinion, whether you're new to investing or not, it's great to brush up and use as a reminder.