I'm curious if anyone who owns a commercial office building has strategies to get additional income via building signage.  

It will be converted to a triplex the basement and fIrst floor one unit and 2 additional units above and will end up approximately 2100sf + basement.

Additionally, it was an epic moment using the knowledge of an iconic BP figure, like Brandon, to jump start a negotiation back up and ultimately close on a deal.

Would it be possible for me to get the bill for the oil, but then add it to their monthly rent?

Would appreciate advice on reserving capitol to buy additional investments.

In addition, my co-worker is being transferred in 4 months and wants to rent the same property from me after i buy it.

Contact banks and see what additional loans they can offer with lower down. 

You can pour an additional $100k into the property's principle in year 1 but that equity won't do you any good unless you refi, sell, or take out a HELOC (i.e. your monthly payments will be unchanged)... make your money work while you do, invest elsewhere 

With mine, I ended up paying the PM company additional money every month because somehow their expenses exceeded the rent collected.

I like this idea, but not all syndicators are willing to do this.Partnering would probably be a good idea as well; finding someone with experience who needs additional funding for projects.