Should I use my new idea as ALSO a place to learn some new technology?

Hi all!

I'm a full time CTO AND I have two insane kids, so my time to start a side project is VERY limited.

I've been thinking about starting something for a long time, but nothing felt "worth" it enough.

Worth it means, although I liked the "product" idea I had no idea how I'd find users, it wasn't an immediate problem I had, and I just wasn't excited about it enough as a business (not just an app).

This last weekend a bunch of unrelated things that had been rolling around in my head for years suddenly all fell into place, like a tetris achievement, it just clicked.

I found an idea that solved an immediate problem I HAD, that overlapped heavily with a non business/non techy related passion I have and want to nurture AND I totally know exactly who it's for, and where I'm going to find these people to try out and validate the idea/product.

I got so excited as this has been sitting under my nose for years, I just didn't see all the connections.

Now onto the "dev" part of it.

I want this project to succeed, BUT I also want it to be fun. At the same time, as I said before, I don't have much time.

So I thought. "hey, wouldn't it be cool to also use this opportunity to learn a new language I've been thinking about for a LONG time".

On one hand, this will add the FUN element. But on the other hand, this will slow down the process significantly to a process which is probably already going to feel too slow due to time commitments.

I could do this FAST with my current skills. But from a tech point of view that feels boring.

I'm not looking for "an answer", but any thoughts from other dev/indiehackers with limited time? :-)

thank you!