What's next with Running?

In the past few weeks my running has really clicked. I feel like I'm nearly back to where I was before I was pregnant (when I was not training for anything in particular). I'm running for about an hour 3-4 times a week with one day of speed work to mix it up. This leaves me with the question of what is next.

I miss crossing a finish line
A part of me wants to sign up for a ton of races. I miss racing- the nervous energy before, the energy I get from the competition and the crowds, the feeling of accomplishment after. I'm also tempted to start training for something longer like a half marathon. I miss working towards a goal. After a couple years of running take a back seat (first because of nursing school and then because I was pregnant), I want it to be a bigger part of my life. A few times I've looked for races and started to sign up. But then I close the window before I actually register.

I have a lot on my plate right now. I have an infant. I just went back to work. I'm not sleeping a lot. I eat most of my meals with one hand while doing something else and it is all I can do to shower some days. It's nice that I can choose what workout I want to do each day depending on how much time I have and how I feel. There is no pressure. Racing is also going to be a lot harder logistically. My husband works overnights on the weekend so he needs to sleep during the day, leaving me with no one to watch the baby.

What to do?