Looking for some advice on my PC build!

CONVERSION

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Feb 9, 2016
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I have a build which I plan to be building around July as my main gaming pc, and I want some advice on how to save some money with similar performance. I am a first-time builder, so I would (and probably have!) missed some very simple things, especially space-wise.
I have included the wattage that I got from Google, may not be correct. I think I might've gotten a too-powerful PSU.

Without further ado, here it is.

Mobo: Asus H170 PRO - $170
PSU: Antec EDGE 80+ Gold Full Modular 650 - $159
GPU: Gigabyte GeForce Gtx 560 TI (Friend giving to me) - W: 170w
GPU (If friend's one is insufficient): 4G R9-380 MSI GAMING - $339 - W: 190w
CPU: 1151 Pin Intel i5-6400 - $269 - W: 65w
RAM: 16G Kit (8Gx2) 2133 Kingston HyperX Fury (Black / Blue) - $107
HDD: WD Blue 1 TB 7200rpm WD10EZEX - $69 - W: 6.8-6.1w (write/idle) 1.2w (sleep)
SSD: SanDisk PLUS 120G - $59 - W: 2-4w
DVD Drive: SATA DVD RW Asus (OEM) - $17 - w: 15-27w
Keyboard: Logitech G910 Orion Spark RGB - $178
Case: DeepCool USB3.0 Tesseract SW Black - $49
Wireless Card: TP-Link Archer T6E AC1300 - $69
Monitor: 21.5" 5ms LG IPS 22MP47HQ-P - $149 (2 monitors?)
Antivirus: Kaspersky TOTAL SECURITY OEM 1 Device 1 Year (with CD) - $13
Thermal Paste: Thermal Compound Noctua NT-H1 - $11
HDMI Cable: Cablelist High Speed with Ethernet 1m - $6
Cable Ties: Partlist 15cm Cable Tie 50pcs - $1
1M SATA 3.0 Data Cable Cablelist - $3

All prices are from MSY from the 28/29th.

Also a question: Are PSU's constantly delivering / using the 650w (e.g.) as that would have an impact on my electricity bill. I don't know how PSU's work AT ALL, so yeah.

Thanks guys!