Update:
3 triple cave spider spawners
1 double cave spider spawner (you dont have to count if you dont want to)
1 double blaze farm
1 end portal
5 dragon eggs
2 gold farms (one overworld one nether)
2 witch huts
Feel free to ask me if you have any doubts/concerns
Also:
I think that there should be a qualifier added to the multi unit spawner thing:
IF it is a double spawner
and IF at least one of the spawner units is cave spider, for mineshafts arent that rare, and each mineshaft (in my experience) has about 3-6 cave spider spawners and has the potential for dungeons to be attached to them, so in my opinion said multiple unit spawners. just a suggestion, feel free to reject