My friend and I are going to play some coop on a personal server and wanted to know what people might recommend for a good pack.  Things/traits we are looking for:
Thanks in advance for any input!
				
			- Has HQM quest that go well with 2 players (i.e. not too easy or intended for large servers if such things exist)
 - Involves building as well as some exploration (Crash Landing and ME3/4, for example, had quests involved going to specific locations in the world as opposed to something more along the lines of Agrarian Skies or Regrowth, if I recall correctly)
 - Has a bunch of interesting mods to play with since we've been away from modded Minecraft for a while and would like to explore some interesting new things
 - Not as important, but doesn't have a ton of really grindy quests (like get a stack of octuple-compressed cobble)
 
Thanks in advance for any input!