That's a cheap starter board to get, except there's not really much to go from there except maybe change the keycaps or add on designs to your casing. I'm not sure if you can get like a metal casing for that or if those sold in the group buys would fit those.
Also, they come with cheap feeling ABS caps. You might feel like this isn't much of an issue yet but once you've had tasted PBT, you might not want to go back to those!
Good thing is that it's a cheap mechanical keyboard, and you get to customize the keycaps to your liking.
You can buy the switch sampler from there I think, OP.
Also, why i think alot of people use TKL's is cause they strike a good balance between size and functionality. Not all of us use the numpad extensively so you can get rid of it and save some space on your desk. Also, for people who play games and all that, you still get to keep the arrow cluster or the pageup page down home etc for typing word or surfing the net and all that. You just don't have the numpad to play with when processing number heavy excel docs for example. And you can always get a standalone numpad later in the future if you really do need it, or just get a whole new keyboard altogether lol.
EDIT: I just took a look at the price again. It's $150, so it's not exactly that cheap. But you still get all the customization options!