No responses since July, so I'm sure you've found a solution and gone with it. But, in case someone else searches for an answer in the future. My experience with oil based products has been that on new decks the wood is pretty "thirsty", so a second coat is almost always needed. I usually recommend my customers do two coats for the first two years, and then as needed. As far as clear coats, I don't use them, just prefer the look of oiled wood.