It looks to me you have two new tops growing out of those lower nodes but it's hard to tell from the single pic (a couple more from different angles might be helpful). I would continue to let her grow without trimming anything (yet). Hopefully you have all your temps and nutrients dialed in.
If it was my plant, and assuming the plant was healthy and growing well, I would wait until those two nodes have grown out to the point that they each have their own nodes growing out. Once I had that, then I would trim off that center main stem about a half inch above the two nodes.