Don't expect half of your wishlists as sales, I've read the statistics a couple of times on multiple sources and it's more 5 - 10% I heard,..
Uh oh, I'd best set my expectations to <100 sales then! Is that the figure of people who've wishlisted it converting into sales do you know? I think Jake's figure was just a rough rule of thumb for your total 1st week sales, including those that haven't wishlisted it already.
Still, while it'd be nice to go full time I'm not going to be destitute if it sells particularly poorly. Just a bit sad
Ah man, that doesn't sound good.
Marketing is an integral part of game development, I know there's like a stigma about it but you can really do this without shoving ads in people's faces.
Just share your work. You have a lot of time before 2019 and if you start the grind now I'm sure you'll have a better feeling inside your stomach before releasing your game.
About the %, yeah but it's not an exact science. I think there's lots of outliers here so as with taking any statistics in mind, prepare for the lowest %, which is around 6.