Well, for around 2.3 cubic feet 2 4" ports it´s more than enough IMO, i don´t think you´ll have ANY port noise with that, i would use PVC tubes and start playing the system, if it has port noise then you can always flare the pvc or buy original aeroports if you want to spend the money on them, about the tuning, yes i do think it should sound very nice, with that little box even tuning it at 25 hz i don´t think you´ll be able to play the lows strong, that´s why i´m suggesting you to tune it around 38 hz, but i might be wrong, so who knows? there´s always different opinions on this forum hehe.