Get the sensei raw, it has a good sensor regardless of what people say you must just get used to it .The click responsiveness is nice, and its comfortable to hold even though it isn't ergonomic like a DA.
Steel series 7g or 6gv2 sounds like this could be for you. Best in the price range, MX black switches. which i personally find the best for typing (its a matter of preference, but seeing as this was my first mech i got used to them.)
Steel series 7g or 6gv2. Best mech keyboards for the price ,solid as and all that anti ghosting is good. Pretty basic, everything you need and a really solid build so it's not going to ***** out and break on you.
kayboard: Steel Series 7g/6gv2. Best mech keyboards for the price, not back lit but cmon learn to touch type. Upon that note, amazing for typing.
Mouse: Sensei (raw), (4 side buttons) If you meant 6 side buttons, i guess you could look...
Steel series siberia in ear. Beautiful sound for the price, NOT FOR GAMING. I think these are definitely your best bet. Good low end aswell.