Hi all, before you all laugh at me for the title of this thread - Please understand it is a candid question and I am searching for some experience-backed answers.

I currently earn around $10,000/month selling stock templates for Photoshop & Illustrator (on my own sites, CreativeMarket, GraphicRiver, Adobe Stock etc). I have been selling templates now for more than 10 years, so I'm no newbie to the world of "stock" itself. However, I have zero experience with image and video.

It's my wife & I's 30th birthdays next year and we are planning a year of travel to celebrate. It got me thinking that it might be worthwhile to pickup a camera and take some stock footage throughout our travels. We'll be covering a wide variety of countries and terrains (from the Nepalese Himalaya down through India and over to Africa), so I figured it'd be an ideal opportunity to build out a varied portfolio of footage.

Typically, when I consider uploading a new type of content, I like to set myself a monthly income goal, and to make it worthwhile carrying a camera with me, I think $1,000/month is a good starting point.
 
So, to get to the meat of my question: How many uploaded items do you think will be required to earn $1,000/month from stock video?

Also, some sub questions:

• What type of videos sell best in your experience?
• Is a new Go Pro good enough to shoot stock-worthy video, or should I take a DSLR? (I would like to avoid the bulky DSLR if possible)
• How long should stock footage be?
• Where are the best marketplaces to sell stock video?

Thank you in advanced, I appreciate any insights you experienced pros can give me!