Hi!
Im running a Ducky G2 Pro 9087 and the Sensei Raw.
I got the keyboard for from Massdrop and they also sent me an extra batch of PBT stealth keycaps which was a really nice bonus. Gaming wise it suits me fine and I like it a lot. No macro keys but since you're into FPS's it doesn't matter. Its tenkeyless AKA no numpad on the side which I like a lot because my mouse hand/arm isn't stretched all the way to the other side of my table.
The sensei raw is a flippin' awesome mouse. Its claw and palm grip friendly and has a nice rubber feel. IMO DPI doesn't really matter if you are considering the Sensei pro. Honestly you're just paying $30 more for a color scheme. Steelseries mice also come with an engine that lets you fine tune your custom settings and allows you to set profiles for sensitivity/brightness/glow/fade. There are also two buttons on the side, for the thumb and pinky respectively. The middle button lets you switch between two sensitivity settings within each profile which is pretty cool.
How its set up right now please don't mind the messy battlestation.