if i can give some advise
portals are windows into another worlds so
they have greater efect if you put them overviewing the village instead of in a room in a temple could work
also if you planning a shopping section make it lead easy to the shops
this will atract more people and footfall
but you the boss just saying
a portal 4wide 2 high with a one block stairs create a nice view before entering them
+fuel stays only 1shard an hour not 2 (if they go from solum to solum)
