Having a few hours under your belt before FSP means you can focus on the flying having gotten over the initial "wow" moments of your first few flights (in your own time) & get's you used to the sight & sounds plus hearing ATC comms in your headset. Gives you some confidence.
If funds & time allow, I'd recommend trying to get at least to your 1st solo.
If not, spend some of your prep time at least learning the phonetic alphabet.
Good luck.