I love the design choices for this tower defense. And you chose great assets to go with your work. I like the idea of having to manage multiple sub-areas. It looks quite polished.
The tower placing itself would feel more natural (in my opinion) with clicking on the spot for the tower, it being highlighted and then showing the tower options with the prices that with a click put it on the already selected locationn. I imagine you were stressed by time with implementing mechanics for these things though! It's quite the ambitious game for the scope of this game jam but you did absolutely great!