I decide on a case by case basis. If I have a "high maintenance" seller who will not take kindly to the fact that I am going from 100% representing them to representing NO ONE and basically sitting on a fence, then I do not go there. Not worth it - yes, the money is more, but so is the risk of a lawsuit.
The majority of my dual agency experiences have been fine, but the key is to assess the seller!! It doesn't sound like you would be dual agency, so things could be different.
If something is going to go bad, it will almost always be when you are about to close.....either side may start wondering exactly who you represent, they may feel slighted in some way. Also, imagine that if you go into transaction status and you no longer represent the seller in any way, which means you can NOT advise or advocate for them any longer - suppose inspections go really bad, for example. Many sellers want advice at that point and you cannot give it. (Well, I'm sure some agents violate agency and do give advice, but not the wisest choice!).
I would thoroughly check out the laws in your state and make sure you abide by them and are protected legally. I personally do not mind paying an agent a referral fee to represent the buyer - you don't even have to do the regular 25% since the buyer already found the house. Considering the commission is so much more, it is a small price to pay to continue your job of representing the seller (which you may have already been doing for literally months).