If you can fit a 360 rad, and you are getting the D5 pump with it, I would recommend doing that. Because if you become a fan of watercooling, you will regret not getting the one with the D5 pump and a bigger rad.
And on a 360 rad, you can have the fans at a lower speed than you would need on a 240. This is especially true when computer is idle. Use of speedfan with the new advanced fan control will give you great control of the fan speeds
I see now that the rasa kit with the D5 is 299$
Which is well above your 200$ intended budget for cooling.
But the risk is high, that you get addicted to watercooling
I have only buildt two watercooling rig, and I have now 1
3x120 and 2
4x120 rads, 6 pumps 4 cpu waterblocks, 2 gpu blocks, 3 pump tops, 2 reservoirs and fair amount of tubing
Much of it is for future builds though, but I'm not a rich man, and I have gathered all this in less than 2 years I think
I don't know how much you would spend to get silence as well, and it's a great hobby in my opinion
And a side note, I have gotten a friend of mine which resides in US to send much of this to me privately, so I avoided customs and tax fee's. Which I then took the opportunity to order more than I needed then. I'm in the making of building my next build now.