GPU Farm Suggestions

Does anyone have suggestions on what to do with my 8 gpu rig?

I have 8 cards all of them are AMD RX 580 4gb cards from sapphire. Nicehash now only estimates a $10 earning per card per month making that less than $80 per month (after energy costs)

Should i sell these cards or is there another coin I could mine that is currently profitable or looks to be promising?

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Sorry this post posted 2 times I hit post and it said there was a error posting so I hit post again and I guess it ended up posting 2 times. I hope an administrator can delete my other post!

https://i.imgur.com/y0oMk2q.png

Invest in around 4 or 5 1080 tis and sell your amd rx 580 4gbs. The 1080 ti is better and cudaminer is a great application