I recommend that you try both methods and see how they feel.

My thinking is that being in touch with the earth is a good idea, as all living things benefit from this connection in all ways, because everything evolved in touch with the earth. And, it is scientifically provable that the human body works better on the cellular level when it is electrically grounded to the planet.

Here is an excellent book on both the scientific and anecdotal evidence of grounding
http://www.amazon.com/Earthing-Most-.../dp/1591203740

Kundalini is achievable, but it will always be a challenge. Every little thing that might make it easier is worth considering.

peace, robert