That may work, may not. A lot of it depends on what your plan is for the frame. I'll suggest not doing a homemade frame since the frame design has a lot to do with the vibration dampening and overall performance characteristics of your quad. I assume you plan to make it out of wood, right? Wood was common with quads before commercial options were available, but G10 sheet and carbon fiber tubing is so much better.
- 1800kv motors are too fast. A typical quad using 10 inch props usually works well with 950kv motors if you are going to fly it with 3 cell batteries.
- Depending on the weight, a 2200 mah battery will probably be too small. My quad uses 10 inch props, and I run a 2200 and 1300 in parallel for 3500mah total. That gives me a little over 10 minutes flight time with a lightweight camera. If I put a Go Pro on it, I'd need to move up to bigger batteries.
- That KK2.1 flight controller will work. It's not the best thing on the market by any means, but it is simple to set up and will get you in the air.
- Get a better radio. Unless you plan to take a laptop with you every time you fly, you are going to need the programming features on your transmitter. Having to connect it to a computer every time you want to change something gets old very quickly. You also will probably wind up adding a second RC toy at some point, so having a radio that can save the programming for more than one is very helpful. I'm no fan of Flysky stuff, but I know the multirotor crowd is keeping that company in business. The multirotor crowd likes anything that is cheap I guess. You can get a better radio from Futaba, Spektrum, JR, or Hitec. But Flysky does make fully programmable radios that will work, at least until they break.

Your best bet will be to buy a factory build "X" type frame and then research what similar sized quads carrying similar payloads are equipped with. This is a pretty mature technology, so there is no need to experiment. You didn't say what camera you plan to carry or if you want GPS or autonomous capabilities. If you do, then you'd need to get a flight controller that has those features.