I have a "Merc Stealth" keyboard which is good and functional, I've had it for 3 years and really like it. It's got the redundant gaming keys on the left side and I really like the placement of the extra tab,ctrl,alt,caps,C, etc because they're laid out pretty well to use just the left hand. My only complaint is the keys are a little small so sometimes I over-shoot and hit a different key if I get flustered in a big fire fight.
For a mouse, I REALLY REALLY REALLY like my Microsoft Sidewinder Gaming Mouse (specifically the "gaming" because there's other gaming sidewinders with number designations). It's not as fancy as other gaming mouses but it totally works for me. It's got 2 thumb triggers which I use for torps and phasers in space and primary/secondary on ground. I use the top 2 buttons for POV and some movement with the scoller for melee and weapon switch. It comes with weights to make it heavier and different slide pads which help if you play other games for like sniper in Call of Duty lol. They're both reasonably priced too, I think 80ish bucks each. But yeah that's my recommendation