observed from your questions, the company will be a private company owned completely by you. You will be the whole and sole decision maker.
if my above understanding is correct, then it is better for you to shift in Dubai, then there will be no tax implications in India.
However, if you do not shift in Dubai, POEM may trigger in India and the company will be considered resident in India and have to pay taxes in India, subject to India Dubai tax treaty, if any.