why don't you start where the original number is. prepare you eating schedule and plan before hand, write it all down, and then record daily if you did what you set out to do. after 1 week, if the calories are that high, you'll begin to feel it and you could adjust downward.
i live by bodyweight x 10 thru 13 because i can't eat high calories. some people say this is bad, some good. i think you should test the waters in the manner i suggested or as others have and go from there.