As someone said below, your anxiety or too much analysis has to be look at it in another level.

But as far as tech stack goes.. This is my opinion.

There is a lot going on, lots of new tools, technologies and resources coming along. But it is totally fine with what programming languages you are comfortable with at the moment IF you are going to do a side/hobby project.

Anyhow, you will have to iterate it a lot on the go. Honestly, some parts of it can be fun and some others wouldn't be. But you have to keep up with it in order to do the release.

So, I'd put this Addy Osmani's quote here: "First do it, then do it right, then do it better".

All the best!