@0Rang3Pumpkin I learned my lesson with Cottage Living. I added it first day of release to get the bonus items but it was beyond buggy. It was full of problems and it broke other packs. Some things remain broken to this day. So I waited with Wedding Stories, about 6 months I think. But that wasn't long enough as my game struggled again. So now I'm super cautious! I do as much research as I can because even just the patch we got when HSY was released caused incessant crashing and I couldn't play at all for a few months.
But it may depend entirely on the platform. I'm on Console, but I'm told that PC players could mitigate problems with Mods in many cases.
I think I'll give it till June and add it as a birthday gift to myself!