New guy looking for advice on his first build

[Emilio84]

Hey everyone... new guy here . I stumbled across this site and it has been amazing when it comes to information gathering. I have wanted an AR for quite some time now and after my friend built his a couple weeks ago I figured I'd give it a go. My build list is below and any advice would be great!

Lower - Mega Machine Gator- Received
Upper - Mega machine w/ M4 cuts- Received
Charging Handle - BCM Gunfighter Mod 4 - Received
LPK - DPMS with Bill Springfield 4lb trigger job - Received
Grip - Magpul MIAD Full Kit - Received
Stock - ARFX ACE Entry Stock - Ordered
Buffer/Spring - JSE Surplus Carbine Spring and Buffer - Ordered
Barrel - Daniel Defense 16" Mid, CHF, 1:7 twist - Received
Gastube - Midlength - Received
Gasblock - YHM Low Profile Block - Received
Rail System - Daniel Defense 12" Lite Rail - Received
BUIS - Troy Battle Sights (M4 Style Front Sight) - Ordered
BCG - BCM Complete Auto BCG - Received
Compensator -PWS FSC556 - Received
Misc - Magpul BAD
Misc - KNS Mod 2 Anti Rotation Pins - Received
Misc - Molon Labe Spartan Helmet Engraved Dust Cover - Received
Misc - DPMS 1" stock extension
Misc - Daniel Defense Lite Rail Barrel Nut Wrench - Received
Misc - 1" Buttstock Pad - Received
Misc - Shop Service (ADCO to Dimple Barrel and Pin Comp) - Sent
Misc - Rail Covers (prolly going with Magpul XTM or Tango Down)
Misc - Sling + Adaptors - Gear Sector?

Hard Case -
Range Bag -
Eye Protection -
Hearing Protection - Peltor Sport Tactical
Lock Box - ?