Believe me I am no expert on the web.
But I do write the copy for clients' websites and leave the technical stuff to the experts.
Clients tell me (providing it's done accurately) that Pay to Click brings them the best results.
You must make sure there is a limit on the budget you are willing to spend.
When that "proves" to be very cost effective - you can then add to the budget.
Although I can't see any harm in doing
SEO as well.
Steve