As has already been said don't get too hung up on how long it will take you, everyone's different, some may take 25hrs, some 40, it doesn't matter, the only thing it matters to is the pocket.
For the record I got a rebate on my CPL package, as we are only charged airborne time it must have been under the 25hrs but I booked 25hrs 1 min, again, everyone's different, just work hard, be focused and give 110% then you can't go wrong