as far as cd head units go, this should have you covered..personally i like the pioneer deh p85000http://www.crutchfield.com/cgi-bin/S-BBO...cc=01&avf=Y
for subs i'd either use the audiobahn or alpine names or the mtx thunder 6000a (for cheaper subs, the sony xplods are decent)
and also with amps i personally like audiobahn, pioneer, and alpine systems.
what type of box you use depends on what type of music you listen to most. if your hearing loss comes mainly from rap or rock, then ported boxes are the way to go because they give you more of a throaty rumble that lasts. if techno, classical or country is your style then a closed box is for you because the beats are more precise and quick.