My website creator says he also does adwords/SEO/etc., but I am not sure if I should use him or someone else.

Hello Friends! Here is the sitch:

I outsourced much of my website creation to this man who has been nothing but wonderful. Now that I am ready to do SEO, ads, and begin selling, I asked him if he knew anyone. He said he does that too. This makes sense to me. However, when I asked him what he would do/recommendations, he said to focus on google's search network CPC ads. I am very new, but I would think SEO, and display network ads (targeting only specific websites), and then using FB for remarketing purposes would be a better route.

Is he saving me a lot of money this route? Am I crazy? Is he crazy?

For a little context: This is a real estate lead generation website where we target first time home buyers who need down payment assistance and set them up with a real estate agent specialist.

Thank you!