Actually, the fact that you have a 7-sided Pole, is more of a problem for the Subdiv Modeling, especially on a curved Surface:

For Subdiv, you will need more or less regular (not stretched) Faces (mostly Quads) and the occasional 3-, or 5-sided Pole are acceptable (in the correct places), if they can’t be avoided, but 6- and more-sided Poles should (and always can) be avoided at all costs.