ETH Mining Rig Suggesitons

I'm interested in building a rig and while I've already looked quite a bit into it, I am interested in hearing from anyone that may have done a rig.

Thinking using 2-3 RX 480s, but any specific cards you suggest? Also, what about cases?

Also, what do you think of: MOBO/CPU/RAM/ethOS Bundle for 5 GPUs

Only gripe is I don't need so many slots, but there's room for expansion. Also slightly worried about profitability as ETH may end its proof of work relatively soon (can always switch to another coin though I suppose)