So im working on building my first gaming pc and the only thing im clueless about is not having enough fan headers. I am going with a be quiet pure base 500 dx as my case which comes with 3 140mm pure wings 2 which have a max rpm of 900. Id like to buy 2 more of the same fan. My first question is should i buy the high rpm variant which is 1600 rpm and use them as intake fans would that be better than 2 more 900 rpm and would it work. Basically same price not going pwm as id have to buy 5 entire fans vs 2. My 2nd question is my mobo is a gigabyte x570 aorus elite wifi and it has 2 cpu headers cpu opt and fan. And only 2 sys fan headers. What would be the best thing for me to buy to be able to fit the 5 system fans on 2 sys fan headers. Prefer more on the cheaper side.