One can argue that there are many manifestations of the one true God, such as the Trinity, Angels, Archangels, Saints, Cherubs, Seraphim, Serabim, the Burning Bush, Ezekial's Wheel, etc. However, once you have accepted this you have embraced the precepts of Vedic Hinduism as well. For me, I will settle for a truely monotheistic view of God.
If you're going to deny the Trinity, the saints and other fundamental aspects of the faith, you really shouldn't call yourself Catholic. Catholicism is not a smorgasbord.
SD