Spend time to re-think and re-measure. 46 bars are big! Unless you are a very large person with wide shoulders, you likely didn't measure properly. Try measuring from the indented socket part of your shoulders and look online for some better explanation and/or diagrams.

Also that bar and stem cost more than your bike is worth. That's not a wide investment. Plus you are getting a set-up that doesn't work with your quill stem. So you need an adapter.

I would spend more time looking and find out what size you really need. Then buy something used on CL and get more experience. But if you decide on keeping yor current bike, get less expensive bars and stem. Use the savings towards a better bike for the future.