Depends on the skins you'd want, it is actually unfortunate that it is already in steam as there are much cheaper places to get csgo skins or games. Anyways, depending on the games you want I'd spend it on games. I have a very expensive csgo inv and I can't say its money well spent, but each game I've bought (with the exception of don't starve) I can say I've enjoyed.
However, I remember ages ago I was able to get a decent csgo inv with 50 bucks, mainly a collection of decent pinks and purples and 1 red, if you'd like to go that route. Anyways, good luck I guess!