If you never plan on installing coil-overs, 3-bolt CC plates will be fine. I use 3-bolt Steeda CC plates on all 3 of my autocross Mustangs. They are a great option. J&M also makes a 3-bolt version. If you are not racing the car, you likely won't be making multiple camber/caster adjustments.
I will reiterate that adjustable shocks & struts are the absolute best mod you can make to ensure you are getting the most out of all the suspension parts you're buying.
In my opinion, a solid steering shaft is overkill for a street car. I don't even use solid steering shafts in my autocross cars. That money would be better spent on offset front A-arm bushings that add caster (Del-Alum from Global West or Poly). GW also makes Delrin steering rack bushings, which will add less NVH than metal steering rack bushings.
If you decide to change the struts and add CC plates, you will need an alignment, so it's a good idea to decide on all the parts that require getting the car aligned at once.
This video is about my Fox, but it contains lot of useful information about the impacts of suspension parts/adjustments.