That's a pretty good way to look at it, I personally plan to just wait. I haven't really had many issues with monsters not appearing lately and I've managed to do Odin , Behemoth, etc. without worrying about not seeing the monsters.

Also@Milmoko : It's pretty doubtful any further updates will brick your PS3 for having an SSD and even if it does happen it'll be fixed quickly as you wont be alone when it happens. If you feel the investment is worth it I'd suggest it.