Be careful about renting, especially if you don't fit really well into standard sizes/cuts. Fit is more important than colour, and I assume you can't really adjust a rental.

That said, green can be great. Banana Republic had a swell green linen-cotton suit in 2017, in that price bracket -- GQ has an article on it. And here's someone who wore green to a wedding: .

Just make sure you're being married for more than your greens!