With that budget, an interest in putting it together yourself, and those trekking plans, I'd go with the following if it were me:
From Tower:
$$$$ - discount coupon -
Tower Hobbies - Coupon Codes
$330 ($297 after coupon)- Rubicon kit -
TowerHobbies.com | Axial 1/10 SCX10 2012 Jeep Wrangler Rubicon Kit or save a boatload of money and instead get the
$220 ($198 after coupon) - Dingo kit on sale through the 24th -
TowerHobbies.com | Axial 1/10 SCX10 4WD Kit w/Dingo Body (this is such a great deal, especially since you can use a coupon on it too; add the jeep body of your choice later and make the Dingo body your "basher")
$8 - Soldering iron -
TowerHobbies.com | Hobbico Soldering Iron 60 Watt
$3 - 50wt silicone shock oil -
TowerHobbies.com | Associated Silicone Shock Fluid 50 Weight 2 oz
$2 - Shock leak preventative -
TowerHobbies.com | Associated Factory Team Green Slime
From HobbyKing's West-Coast USA branch:
$10 x 2 - 3s 2200mah lipo battery -
Turnigy 2200mAh 3S 20C Lipo Pack (US Warehouse)
$25 - DC balance multi-battery charger -
Turnigy Accucel-6 50W 6A Balancer/Charger w/ Accessories (US Warehouse)
$10 - AC power supply for charger - HobbyKing Power Supply 100~240v 5A (USA Warehouse)
$20 - Servo -
HK15298B High Voltage Coreless Digital MG/BB Servo 66g / 20kg / 0.16s (USA Warehouse)
$33 - 17.5t Sensored Brushless Motor -
Turnigy TrackStar 17.5T Sensored Brushless Motor 2270KV (US Warehouse)
$7 - Hex driver set -
Turnigy Long Shaft 4pc Hex driver set (US Warehouse)
$6 - Hex socket driver set -
TURNIGY 4pcs hex socket driver set (USA Warehouse)
$4 - XT60 connectors -
Nylon XT60 Connectors Male/Female (5 pairs) GENUINE (US Warehouse)
$1 - 5mm heat shrink tube to prevent short-circuits -
Turnigy 5mm Heat Shrink Tube - BLACK (1mtr) (USA warehouse)
From eBay - select "US Only" for Item location on the left:
$50 - GT3C transmitter & receiver (includes battery & charger) - I'd recommend a RC3S instead but you'd have to wait for it to come from China
$50 - Quicrun WP-10BL60 ESC - waterproof, brushless & sensored 2-3s lipo-compatible speed controller with drag brake & LVC to protect your lipo
$10 - Hobbywing LED Program Box Card PC2C - for easily programming your ESC
$40 - Rubicon body - when you're ready to paint & detail
$3 - solder