Spin training in a C172 is somehow awkward, as almost all 172 are not allowed to spin. What is the use of such training? Isn't it dangerous, as virtually every 172 you take afterwards does have a placard saying - do not?
Besides from that, many if not most 172 will not spin at all and if they are re-rigged to be able to, they feel quite wrong upon doing so.
Resumé: I would not bother if spinning a 172 I could not cope with, or does feel bad - it is.
Advice: do spinning training in an aircraft really meant for it.