5 man lvl 80 doing old raids

[plavo3oko]

Hi, i managed to make 4 of my frends play wotlk on lirdeon server. I was wondering if it is possible to do Aq40 of Aq20 with only 5 lvl 80 players. Our goal is to hunt down every achivement for every dungeon in every mode. If anyone has done it please tell me your experience. If there is already a thread with this subject link it in comments.
PS sry for bad english and this is my first forum post

[Luchiano]

I started recently soloing some of the bosses in Aq20 and Molten Core as a prot/ret pala , theres only some bosses that has mechanics you cant avoid where you need atleast on more like last boss in Aq20 hits 4 times harder if you dont click some crystals and such , so im guessing with atleast a healer u can clear most of vanilla content , and 5 decent geared ppl that knows what they are doing you can tackle atleast some of the BC content if not all.