cds clutter interiors, lol, an ipod connection, or usb stick connection head unit is the way, but its up to you if youre willing to sit at your laptop for hours downloading it all, lol
components are better than coaxials, however coaxials are cheaper, all depends on your budget, 2 pairs of decent speakers amped up will sound mint, but wont give lots of bass, the cheapest comps ive found is the vibe slick 60s, which i have, although my mate has the slick 50s which are the size youve mentioned that you require, and tbh, they arent too bad for the money
2-way coaxials are more for limited space and funds, comps for sure if you have somewhere to house the crossover and tweeter
i dont know what the mk2 interiors are like so i cant comment on that