I appreciate your input, and while everyone has their own take on the single vs. twin debate, my own is that a twin is definitely safer as long as the pilot does their job with recurrent training. From pouring over NTSB data it seems the vast majority of the fatal light twin accidents for light twins, in particular a Baron 55 which is what I'm looking to buy, focus on pilot error or the usual continued VFR into IMC.
While your chances of an engine failure are definitely double in a twin, the simple fact remains that you've generally got one left to buy time with as opposed to a single where you've now been converted into a glider.
I definitely love my Mooney, and will continue to recommend and speak highly of them in regards to singles, but 2 more seats, improved climb, and additional redundancy of a second engine more than pushes me towards a light twin as the next step.