The saddle angle and fore-aft adjustment is unaffected by using the pump. To get the proper saddle height I put a piece of tape around the pump right with the bottom of the tape right at the top of the seat tube when the saddle is at the correct height. This allows me to just insert the pump into the seat tube until it stops. The only other adjustment is to line the nose of the pump up with the top tube which is quite easy to do. If this proves difficult (it shouldn't) you could draw a line on the tape and the top of the seat tube when the seat nose is in the correct position and then just line up the line when you reinsert the post and you are ready to go.