I wouldn't be looking for esters in the first place. That aside...
...I re-pitched slurry from a bock to ferment a doppelbock last year and it turned out great. Use the pitching rate calculator at www.mrmalty.com
to determine how many cells you need and how much slurry it will take to make sure you pitch that number. Pay attention to how your fermentation goes with this batch to determine whether your yeast are in good condition to pitch into the next batch.
Most people underpitch their lagers. Make sure your pitch rate is high and give the little yeasty bastages lots of O2 at the start. Good luck!