Not questioning your reading of the scales, just wondering what makes an
aluminum frame bike that heavy.

Even 46.4 is way more than I would have ever guess it could weigh.

You need to figure out how much all the stuff you need weighs, you
may not be that much ahead to spend a lot of money. I don't see all
you listed being more than ten pounds. But I may be way off too??

I am going to be a bit blunt..

Your fitness level is much more than the weight of the bike. I ride
with a trailer some times, with near 100lbs. Yes I can tell it is there
but it does not make a great difference in my riding. Maybe one
gear lower. I do climb a few soft grades with it, no real hills.

Before you spend any money, take all the stuff off your bike
and ride it. Check the weight of the bare bike. So when you
go shopping, take your scales and check the bikes you are
looking at.

Have you ever had a flat?
Just for giggles, put the valve stem at the bottom of the tire,
and let some air out. If it is full of stop leak it will come out.