essentially no matter HOW you cut it, the pro ends up about $350 more than the AIR if you use the same RAM/storage "apples" to apples.
its about a $500 difference between the PRO and the MINI for the same chip, same specs... the concept of portability is nice with the laptop for him, and hes going to start "dabbling" with final cut and logic, but does a lot of coding and has a custom built PC he uses now, so the MINI would conceivably just plug into the second port on his monitor and hes good to go.
Really more curious to figure out if the graphics downgrade from the pro or mini to the base AIR is going to present challenges down the line.