budget friendly horn design

Hey gang,
Before i start, if im in the wrong section, please move to the correct one.



So looking to set up some sound reinforcement for small venues where i live. I would like to run a total of 4 bins. Target response would be 35hz to 100hz. Ive been mulling over lots of dyi plans like the xoc1 th18, keystone, othorn, cabo18, etc. Its just becoming very overwhelming splitting hairs on designs. And the fact alot of them use expensive drivers such as the bcsw115 or pd1852. I dont need the extensive power handling. Maybe 750/800ish per bin would be sufficent. Can anyone steer me towards a design that uses more budget friendly drivers?