I can do a different day but there's not a chance I can manage 7PM next week. As I say, it's unlikely we're going to finish it in one go anyway because it's a totally new raid where we don't know what we're doing (and it's L30), so I wouldn't mind handling more sessions if need be but with slightly later start times.
We could start Wednesday 8:30, then just repeat that time on later days when people are free. I reckon 2-3 sessions and we'll probably have conquered it.