which way white man

Hi guys, im thinking now for a while about drawing a horror comic, that has the same structure as a 90-100 minutes movie, a slasher, like Friday the 13th?
But how much work would it be, how long would a 90min movie be as a comic, round about. Of course it depends on style and preference how many pages a scene would take and so on.
But i would like to know the aproximate scope of such a project. Is it more 100-200 pages, or 1000+?