In general, unless the highlights of the neg you are working with are very dense, your base exposure should get you the highlight detail you want. You control the shadow rendition with changes in contrast.
What filter are you using for the base exposure?
All that said, you can burn with whatever filtration does the trick, which is one of the nice things about VC papers.
If the highlights are too dense in the neg, you may want to consider flashing the paper to get some tone into the highlights instead of complicated burning.