Let me give you some advice right now. Full merdian you're looking at a maximum increase of about 1-2K HP. Thats literally less than 1 skill's damage. Its useless unless you're fighting level 2 mobs outside city of the lost and wanna deal 60 more damage ontop of your current.
Titles will give you FAR more stat increases than meridian. Tbh, just get 186 spirit, titles, because merdian is BS once you're about to complete it.
inb4 harsh criticism bc truth