Do you know what, I also started like this and ended up with nothing. I am not demotivating you, but that's the truth.
If you're blogging alone, you won't be able to manage all that alone.
You need to get specialised in a niche which would make much easier for you to build email lists and promote your products by PPC by remarketing.
I would not even suggest you to go for a niche like cars. I would like to further niche it down to SUV's or whatever.
This is mine suggestion. Let's see what others say.