Starting a new affiliate site

Hello, I'm new to Warrior forum.

I'm looking to create a new site about learning guitar and I just thought I would float a few ideas to see if anyone had any ideas about the potential of site or could stop me from making mistakes and wasting my time.

Just to tell you a bit about myself I'm a graphic designer and I've been running my own site (on WordPress) for 5 years and now get 23,000 visitors a month. I don't make much money from it in terms of affiliate sales, etc., although all my client work has come from it - so you could say the site makes all my money.

I want to get into affiliate marketing and niche sites and I thought, in order to do something that was of interest to me, I could start with the learning guitar niche. I would like to start the link building by article marketing and targeting a few keyword phrases that use "learning" and "guitar".

I haven't found any products to promote yet but looking around CJ there seem to be plenty to choose from.

I was thinking of making the site multilingual.

I will be creating a free product as an incentive to join a mailing list. I'll use Aweber and have some sort of sequential auto responder.

I'll also be doing YouTube marketing.

So, I wondered what you guys thought? Am I going into this too blindly with too vague an idea about keyword research and without having decided on which products to sell?