Since you mentioned returning to bhop I'll give you the list for the ranks and xp needed
zarpgaming.com/index.php/forum/bhop/7059...p-information-thread
If you scroll down a little it will show you the xp needed for each rank
I don't think there is a way to preview how the cosmetics look, the only real way is to see someone else use them/the tiny icon provided
As for the legendary pack
(From left to right incase it's not clear)
Zelda-Tomato head-Ciri-Mercy-Yuudachi-Iron Spider