This sounds all too familiar. I basically made the same post as you just did a couple years ago about my miata. Daily driver, lots of miles, reliability first priority, 300whp goal, PS and AC a must, and I would NOT hack my bumper or it's support, or windage pieces.
I ended up doing a very non-traditional approach, moving the condenser forward some, the radiator back a bit, and sandwiching the IC between them. Ended up getting a 20x12x3 core IC there without modifying the bumper at all, and it's invisible to boot (sleeper all the way).
In your case, I would recommend a front mount IC for no reason other than it being a daily driver and you want 100% reliability. You COULD build a fancy smancy fail-safe water injection setup, but that would cost a lot and you'd still worry about it some. FMIC is 10x more set-it-and-forget-it. And it's better in some ways as you're removing heat from the charge.