I hope I understand you question correctly, it's a little confusing.
While it may be nice to have your rifle zero very close to your mechanical zero, what you're suggesting won't make any difference. Moving the turrets around before sighting the rifle in will have not effect where your zero is within your adjustment range. If you want more "up" adjustment, you will need a base with MOA "built in" (canted base).
Take your rifle to the range, bore sight it, then sight it in. Decide how far you expect to shoot and how many MOA of "up" adjustment you'll need to get there (keep in mind some weather conditions will require more MOA). Now count MOA up from your "zero". If you don't have what you need, invest in a canted base. I'm sure the subject has been covered here before. Hope it all works out for you. Let me know if this makes any sense to you.