Where to start
 

I have 12xxx miles on my '14 6MT. I would like advice on improving the driving experience incrementally. Best bang for the buck items right now. Stiffen things a bit. It's too rubbery some times. It's primarily a daily driver as the car is my commuter. I do want to do some autox in the future, but I don't anticipate it being something that consumes and becomes an obsession. I would like to autox a few times a year to take the car to a safe venue to push it hard.

My research so far has me looking at these items. I lean to Perrin simply because they are 5 miles away.

Air filter
Camber bolts
MTEC springs
Tranny mount bushing
Perrin shifter bushing - have this one.
Strut bar(s)
Lock steering gear (perrin) or stiffer bushings
bushing kit to stiffen rear end
brake bracket
stainless brake lines

Plan in next few weeks.
Air filter
Perrin shifter and tranny bushings.
Perrin strut bar

I imagine this will be the start of my build thread. As of now I have tint, weathertech and rally armors. In 6 weeks I'll be getting the hood and fenders wrapped. I also need a good way to secure goods in the trunk. I was thinking a strut bar for something to secure something to.

You are going to get asked this..."How do you use the car now and how do you intend to use it in the future?" Is it a street car only or are you going to autocross or track it? If you have any intention of autox or tracking, do some research in that forum. I found @csgmike's sticky particularly useful for those who want to track their cars and have minimal experience.