you're right, meant to put NC.
But you'll need a motor starter for the motor itself, the safety relay isn't a rated motor starter. it's only meant to drive other safety relays. like the 700s-CF series relays.
it sounds like you may need to look more at basic circuit control designs, and reading the manuals for the things you're proposing to use. The initial proposal of running a motor from estop contacts is a pretty bad idea when it comes to the industrial world. You may have seen something like that when it comes to a table saw, or home type appliances where the "Estop" is actually just a retained stop paddle or button which is capable of tranferring the motor load over it's contacts without an interposing relay in the circuit. you're getting close to the right track, but if I were you, I wouldn't take on building a safety circuit and claiming that it's "safe" until you know for sure what you're doing.
also, at least here in the US. for insurance and other reasons, unless someone is specifically trained to do so, they can't just decide how safe something needs to be without a safety evaluation to determine the SIL level it needs to be at. For my company, we hire in the OEM who have those certifications to evaluate a machine and determine what level of safety it requires, then we just build out the circuit to the specs and wire/program according to the standards. Without the safety rating, we can't and won't claim that a machine is actually safe to use other than removing all power and having the company who owns the machine go through and create a safety profile for it to determine what hazards it has and need to be removed... That's pretty much all up to the end user at that point.