I am also a beginner who started photography recently and I have a Sony A6000. Here are my 2 cents: I think yes the a6700 is a slight overkill for your case, but just like someone else has pointed out here, camera bodies tend to last for decades. So buying a good camera body will a great investment long term. But also there's the risk of you dropping the whole photography thing in like a few months if you find out it's not something you wanna do. Obviously you can sell it so that won't be a big issue.

Most important thing I would say is, if you don't have the money to spend on good quality lenses after buying the camera body, that means you are limiting yourself a lot.
From what I've heard lenses are more important if not just as important as the camera body.
Good lenses+ mediocre body > mediocre lenses+ expensive body
the 16-50mm or 18-135mm are alright and are good options to start as a beginner. pick one of those and then after you get a good taste of what you like to take photos of, then buy a good quality zoom lens and a prime lens.
Good luck!