I actualy think do it. Especialy as you want to go commercial,
1) It i will count as hours towards the 150 hour commercial pre-req
2) The hours will be quality hours and not just buzzing about for fun
3) Your flying skills will improve to meet the minimas required for IMC (i.e. Altitude and course holding)
4) It lifts some weather restrictions for you private flying
5) Gives you a bit of security if you get caught in crap weather
6) It will certainly give you a heads up when it is time to do your IR