Whereabouts do you live?
If in the US fish tanks direct in Florida made my 10x3x2.5 560 gal acrylic tank. They have a custom tank calculator on their site & ship nationwide. 36-40” tall would be very difficult to scape and clean. I would recommend 40”D if you have the space and 30”T but that’s just me.
A glass tank that size would be crazy heavy, and once scratched cannot be resurfaced like an acrylic can.