Building my first ethereum mining rig.

So a couple months back i got into crypto currencies and since i am such a hardware junkie i thought to myself why not attempt to build a ether mining rig to see what it was like, so i already had to RX 460's 4gb versions laying around so i started mining with them, both of them combined i was getting about 23 hash, average $40 to $50 dollars a month on Claymore miner v9.7 on windows 10, so i decided to pickup 2 more rx 460's because i was liking the income from both of them, and now i am averaging 46 hashrate on all 4 cards combined (Average 11.7 Hashrate per card) so what was my income? and how much did the rig cost? the rig costed me about $600 (Including the cards i already had) total for all the parts, and i am averaging $80 to $100 per month, and about 3 dollars per day including power costs my power costs are about 10 cents a day, that is 1 ether every 2 months or so at the current price per ether at $220, and the rig will be payed off in about 6 months, those are some crazy returns.

My current pool i am using is: https://ethermine.org
And the wallet i use is: https://www.myetherwallet.com/

Here is the full spec list of my rig:

Video cards
x2 XFX Radeon rx 460 4gb
x2 Sapphire nitro radeon rx 460 4gb

PSU: GIGABYTE GP-B700H 700W ATX12V

CPU: AMD Athlon II X4 620 AM2+/AM3 CPU

SSD: Intel 320 Series 80GB SSD

Mobo: HP Pavilion 620887-001 Alvorix

Risers: Fixable PCI-E 16X to 1X Adapter USB3.0 USB 3.0 Riser Cable

Ram: 4gb DDR3 SDRAM 1333Mhz

Hope you guys enjoyed the post, i am also currently in the process of building a Ubiq rig and will be doing a post on that within the week.