Question Upgrading system

Feb 28, 2019
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Hello, i am slowly upgrading my current setup, already bought graphics card (it was pretty good deal for me) now trying to decide what to take for cpu. I really-really want i9 9900k, but trying to choose between different mobo's is confusing. Also after reading some tests it seems like noctua dh15 can keep up with 9900, considering i'm not going to push overclock to the limits, maybe just slight one. My current setup is following https://pcpartpicker.com/list/Jc7fBb (but i have zalman z9 u3, pcpartpicker dont have that option, don't think it matters much anyway)
I know that noctua may be hard to fit in my case, but i definitely can't fit any aio in there and don't want to change case either, id rather leave case without cover for cooler to have space.
So questions are:
1) is cs750m sufficient for the build i am aiming for?
2)Which mobo and ram are good in terms of value?
Thanks for any help provided