If you really want to stick an extra add placing it on a banner bellow the 'news tab' should be the best place imo
Clicking on the 'PLAYER NAME' section would be the same as clicking on 'My Profile', allowing the player to see his stats, change his pfp etc
Rank and Cash visible on the top bar with the option to hide it (in case of screen sharing, streams etc), clicking on cash would redirect the player to the option to buy more.
I think the rest is self explanatory tho
both chat are meant to be collapsed
with the world chat taking that approach implemented a (long) while back of public rooms