Need help with new build

[Missing ghost]

Hello everyone on ltt fourms

I need help with my bew build

First my pc parts

Mb: asus tuf b450m plus gaming

Cpu: ryzen 3600

Ram: 16gb 3200mhz

Psu:corsair rm750

Gpu: rtx 2070s

Case: corsair crystal 280x

So i am trying to build this but i have some problems

I installed aio cooler (corsaie h100i rgb) with 2 120ml fans 

So i have some issues with cables

Each fan have pumb header and rgb i connect the rgb to node pro however for the pump i connect it to this photo

Now the thing is there 4 headers there 2 with number 1 on it and 2 have no numbers so i don't know witch one to plug

Second thing is when i try to install the cpu cooler some thermal paste were touching the cpu but i kept pulling it out more then once is it fine or i need to redo it?

For the front panel cables i have 4

Reset sw

Power sw

Power led +

Power led-

Now in the manual i don't know where to put the reset sw and power sw so where do i connect them?

Last thing is the airflow should i keep the same path of airflow or change it? Gone post photos 

Thank you...

[Missing ghost]

Alright new update i cable mangmet everything in the front also i look at the motheboard itself to see the cables headerd so its all good now

Now i have to plug my psu cables

I also put my gpu and i notice it hage bracket to use it on bottom of gpu but i am not sure how to install it right i try to find youtubes videos but no results ( my gpu only wiggle abit with force of my hands)

Also i kept using my cpu fans like in the first photo since the motherboard have 1 cpu fan and 2 case fans( 2 fans from aio cpu and 2 from the case) so idk if i keep it like my first photo or not

Also aio have to be at the top since there no space for the front with the gpu