Do I do it?

You need Pool Party Fiora because, in the wise words of Bricky, https://i.imgflip.com/1luwox.jpg

do what

i'd say disenchant tf and wait for some lower priced skins to roll around.

https://m.popkey.co/78b29a/rzvvX.gif

You mean, disenchant teemo and fiora skin and get tf skin?