What type of future work are we talking here? Looks like that's only a 100 amp service, which honestly isn't quite sufficient for today's demands, however it will work as long as your not planning something like say, a heat pump unit, electric furnace etc... Last year, I was having a heat pump w/electric air handler installed in my house.. I already had 200 amp service, however I needed to be able to add a couple double-pole breakers to my load center.. I had the old style push-matic breaker system, and for the 3 breakers I needed, it was going to cost me close to $300... I put a whole new load center, with all the breakers I needed plus some spares for less than that so keep that in mind for sure...
If you find you do need 200amp service, that is something I would DEFINITELY say hire a professional licensed electrician, as with that type of change, 99% of the time you have to change your feed wire, power mast, and ground wire (sometimes even the power meter needs changed, but that is the P.C.'s concern).
God Bless our Troops as well as their families!