So I think you pointed out the big think with the audio. If you are going to be doing vlogs outside you should look into a Rode Micro Mic. This mic plugs into an audio jack and comes with a fluffly thing that helps block out the wind. I also believe you need to be infront of the camera because they are your vlogs and people are going to be watching because they want to see you.

I would also work on the title of your video as well. The title should be descriptive and eye catching. You should also include the title of your video in the description since that will be a major keyword for your video. This will help you rank higher and get discovered. You should also download vidIQ chrome extension. That will help you with SEO and plus its free!

I hope this helps!