Does anyone know if I'm required to be represented by an attorney?

I'm the agent representing both sides.

In addition, the equity I have in the home represents the vast majority of my nw, so I feel like I'm not well diversified. 

The owners, property managers and agents who specialize in rental properties represented over 1,400 doors at the June KnoxREIA meeting and this meeting could be larger.

If you don't have a realtor representing you, you can negotiate the commission as part of the sales price, at least here in Oregon.  

I have a full time job as a scientific instrument sales representative, and I am normally on the road at least three days per week.  

Questions: I'm not being represented by anyone, should I look for an agent who can represent me in these dealings?

The agent is representing both of us.

First off, they are misusing the term "pocked listing" as to real estate terms, it's buzz, no big deal, but know a pocket listing is generally illegal by RE Commission regs, where an agent simply holds the listing contract and doesn't actively work it until they come across a potential buyer, they keep the listing in their pocket.I do not advise newbies to use a listing agent to buy, in a dual agency (which was misguided in that video) the listing agent represents the seller not the buyer.

No person shall engage either directly or indirectly in the business of a real estate broker, broker-salesperson or salesperson, temporarily or otherwise, and no person shall advertise or represent himself as being authorized to act as a real estate broker, broker-salesperson or salesperson, or to engage in any of the activities described in R.S.45:15-3, without being licensed so to do as hereinafter provided.