The owner is exploring options to leverage the property.

I think it is important to always have your finger on the pulse of the market, and where it is trending, while also rewarding long term tenants for staying with you (thus not causing you turnover expenses).When calcuating an increase of an existing tenant, make it small enough of a bump that the thought of moving over $XX isn't worth it, and also just below what their replacement options would be if they did decide to explore options. 

I am now exploring property managers for a Duplex I recently bought in Arlington.  

Wholesale is a very effective method, is just extremely time consuming (until you have real processes in place) but you are fresh out of college, the one thing you have is TIME and if you put time and effort in wholesale you will be successful.Also as an optional step you can explore getting your real estate license so that when you buy properties you can get commission or help friends and family and get commission there as well.Credit is important when you don't have much cash, but more important than credit is understanding your options and what path you want to take. 

Is this normal or are there other options I should explore for financing?  

I'm exploring Amazon FBA as an additional income stream and to help fund future real estate investments. 

Even then I still wanted to explore ways to "save" the deal by re-negotiating the purchase price.

You are asking the right questions getting into things, and BP is a great resource so be sure to explore other forum posts and the articles on the site! 

So I am exploring diferent options.

Partnering is likely a possible answer I'll have to explore.