Arduino/wiring help

This is my creation after searching whole morning for information from the internet. The purpose of the Arduino is to be my little assistant in controlling my PC and its lighting.

What is the smallest Arduino I can use and how do I power/wire it? What pins can I use?
I will need total of 6 PWM pins and RX and TX pins for the BT module.

This is the attachment in post 1 for everyone's convenience.

For that number of pins you will need something like a Nano or a Pro Mini.

Is everything fine? Nothing burns down my house if I connect it this way and there are no faulty components?

Mad_:
Is everything fine? Nothing burns down my house if I connect it this way and there are no faulty components?

Can't tell from just a Fritzing diagram.