If you want cheap the cheapest is hub motors, but the best balance between cost and performance and modularity is belt drives followed closely by chain drives
The cheapest and most reliable remote right now is the mini remote 2.4ghz, the most popular remote is the Hoyt Puck.
Motor mount and wheels heavily depend on your drivetrain choice.
Deck is okay I guess. Bit expensive for what it is I think, but it’s got good reviews, so maybe I’m wrong.
Need someone else to weigh in on the battery choice, I’m not an expert when it comes to lipos. A known brand would make me feel more comfortable about it.
I recommend MakerX for a cheap but reliable ESC. Worst case if that’s not cheap enough I’ve seen that flipsky ESC on sale for 20$ on ebay before 
A used focbox or Torqueboards ESC would also be decent choices.
I assume you’ll be sticking to single drive for budget reasons. That motor is a good choice.
Drivetrain: Assuming you want to build a belt drive board which has some kick to it, get Boardnamics trucks (width depends on the wheel size you choose), pulley, mount. But the hub motor recommendation is also good.
Wheels: I assume you’ll want urethane for maximum range. I would definitely try to buy some used Popocas or Flywheels off someone. If you have to buy new, then Orangutang Caguamas.
+1
ESC
I would avoid a VESC 4.12, especially for $100. That’s pretty expensive for what is really a $50 controller. It’s the first generation of VESC controllers, and they have come a long way since then.
IMO you’d be better off with a FOC 75100 off AliExpress
It’s a 20s controller without a DRV chip so it would be pretty reliable at 10s for the same price. You will have to solder bullets for the motor and a battery connector on.
Even two of those would be cheaper than most dual controllers
Drivetrain
This is your best bet for cost. Includes motor mounts, motors, and pulleys. Even if you decide to go with a single drive the whole thing costs less than that flipsky motor
You can 3d print the wheel pulleys. Lots of options on Thingiverse
Remote
A mini remote with a 3d printed case
Enclosure
These can turn out pretty well
Dead flat pintail deck would not be the way I would go.
With your budget in mind, mini remote is the answer.
US $19.28 28%OFF | 2.4Ghz Mini Remote Controller Receiver for Electric Skateboard Longboard,Black