I had some time yesterday and was able to install the upgraded screen kit (with upgraded audio) and topper kit.
The XL display was a very easy swap out. The subwoofer replacement wasn't terrible, but prying out the old subwoofer mount was a bit of a pain. The screws for the new subwoofer mount seemed a bit short, so I swapped them out for slightly longer screws I had on hand. I know there were some previous posts about possible workarounds to get the RGB lighting in the speakers to work - can anyone confirm they did this and it works without issue?
The topper was a little more work with needing to drill the holes in the backbox - but the included template made it fairly simple. I took the advice of others and mounted the RGB board higher than the template, and it worked out well. The only issue I had was the grounding wire. The connectors on the ends were too small and wouldn't fit on the boards. I had to cut them off and attach two new blade connectors (thankfully I had some on hand). Unfortunately the RGB lighting in the back right is not working (tested using the CGC menu). I have a ticket in with CGC as we speak.
It took me about 4 hours to install these two mods, but I was not really hustling and made some time consuming mistakes (for example I removed the old subwoofer from the existing mounting plate, not realizing I had to remove the entire mounting plate).
I will hopefully tackle the RGB lighting during the evenings this week (or this weekend).