Looks good.
um also what coolant should i use , clear coolant like the best?

thanks
Personally I've been using
Aquacomputer's clear stuff for the past few years and it's worked great (as mentioned with Primochill's "bad" tubing). But I'm not aware of any serious problems with other manufacturers' clear coolants, so you could probably also go for
EK's coolant,
XSPC's stuff,
Mayhems' X1,
Feser's clear coolant or
Alphacool's stuff.
Personally, I have no experience with any other coolant besides the AC Double Protect Ultra. It's been great in preventing any corrosion (I currently still have an anodized Aluminium reservoir), I've never had Algae growth even after running a loop for 17 months without cleaning and cooling performance has been excellent.
Note that the performance differences between the listed coolants will most likely be negligible as they are still mostly water with additives (the water being responsible for cooling, the additives for preventing corrosion and algae growth). Any significant differences between them will be in their flow behavior (they flow more smoothly than water, making it easier to get bubbles out of the loop) and corrosion/algae prevention. For this reason I would also not necessarily recommend picking a coolant that's twice as expensive as average; there's no such thing as a thermodynamic silver bullet and any performance gains (if any) will not be worth the markup compared to competitors in my opinion.
Even the averagely prices coolants are too expensive for what they are as far as I'm concerned, but they do offer some benefits which is why I'm using them despite that.
do you think this would be good? also the 3 fans that come with the kit could i use them to make it to 6 fans ? or would you say any good? or should i just use them as fans for my case?
thank you loads!
From what I've heard the XSPC fans are actually not too bad, but the Noctuas will give you better
performance/noise ratio. Whether or not you can still use the other 3 fans for something is for you to find out

.
If you go for 6 fans on the radiator (I don't remember if that would actually fit in the 810) I would recommend 6 fans of the same type.
However, the RX360 is a very low FPI (fins per inch) radiator and therefore does not require enormous fan power to reach its full potential, so I would recommend sticking to the 3 Noctuas and keeping the other 3 as spares. It will be a lot less noisy for only slightly less cooling performance.
The Switch 810 already comes with some 140 mm case fans (in fact four if I've read correctly) which will in all likelihood be less noisy than the XSPC fans and absolutely sufficient for venting the case.
EDIT, because Airdeano :lol:
Of course the Noctuas are fantastic fans but as he says you can easily still buy the Noctuas later if you're not satisfied with performance/noise. Since I'm not very familiar with the XSPC fans I omitted that variant in this post, but if deano says they're good I'd try them out first.