How to mount an iso file in which was extracted from multiple archives?

Ok so im trying to play KIngdom hearts on my pc using the pcsx2 and i believe it works pretty well although i havent had a chance to try it. I downloaded Kingdom Hearts as a torrent finished it. then i extracted in the folder on part01 and it auto extracted the rest. It gave me a rar iso it said KingdomHearts.ISO but it was a winrar archive and inside of it there is a bunch of idx and irx and theres this one img file and i tried to mount it to drive and it worked. i went to pcsx2 and tried it it doesnt work just a black screen so im wondering how do i mount it properly or how do i put the iso image in pcsx2 and have it working because when i just put the image in there with the iso one it doesnt work at all.