Should I be switching from Rebel T7 to A6000?

I bought the Rebel T7 two months ago. I've shot around 1,000 photos and the only damage that has occurred is a bit of dirt underneath the zoom ring on the kit lense (18-55mm) causing some difficulty moving it. Not enough difficulty that you can't get the zoom you want.

I saw a video A couple days ago on the A6000 and thought about switching. The mirror-less properties and portability are what I crave the most. I've seen comparisons on websites and while A small upgrade is still huge in ease of use utilities even though I've got The 55-250MM cannon lense coming in June 8th.

I plan to buy A used version and sell the T7 and the lense coming in soon. The body of the T7 works perfectly and the lense has issues zooming and that's it, nothing under the lense. Whats the most I can sell the T7 for and should I even move over from Cannon to Sony?