Well, assuming that you want 2 buttons on the side of the mouse as well, one of the best ambi design+sensor combos on the market is the Zowie AM which I'm actually using at the moment. It's a pretty good clawing mouse unless you're used to clawing an ergo mouse and rest more of your palm on the back, in which case I would suggest the EC2 eVo (which is slightly smaller than the EC1 and lends nicely to clawing for right handed ergo claws). The Logitech G400 has a very reliable sensor and is an ergo but is slightly larger so that's a matter of your hand size.
All of the aforementioned have zero-accel/zero-prediction sensors which lend them very nicely to Quake and CS specifically. The only reason I didn't mention the Deathadder is because it's a very large mouse and people who claw it usually come to a compromise with its physical size, but it's always an option with a zero accel/zero prediction sensor as well.
As far as keyboards go, really any mechanical that isn't from Razer or Steelseries can be considered a good gaming mechanical. Just become familiar with which switch type you think that you would prefer (Reds, Blacks, Blues or Browns) and look at brands like Filco Majestouch, Das Keyboard, Deck (borders out of price range, expensive brand for led backlights lol), Ducky, and Leopold amongst others. If you want a board with fullsize keys but compact overall build (for peripheral or mouse pad alignment comfort) the Noppoo Choc Mini 84-key model is also very popular.
Just avoid keyboards labeled as "gaming" specifically if you're really interested in the highest build quality. The only labeled gaming mechanical that anyone really recommends is the Corsair K series which are pretty nice keyboards, but your 120-150 price point opens up some very nice niche brands like the ones I listed above.