We recently found a new cage for our new bird, a Sun Conure like yours. She was in a small cage, but seemed to be well loved. Her owners downsized to a studio apartment and I was given this opportunity to purchase this beautiful bird. Since we recently went through all of the thinking and planning of the space, I wanted to share some of the ideas in hopes it may help you or anybody else. I did find useful info here in the forum myself.
My Sun Conure's new cage is now propped up a bit higher as it is sitting in a window seat. She enjoys this "high perch" which provides a good view over everything all-around. Height makes cleaning quick and easy for me, no bending or reaching! Perches/branches of varying widths and interesting toys are arranged to encourage exercise while moving around to (6) small feeders in all corners which are filled daily with food, water & treats. The window is never opened, so no drafts. A digitally controlled heater is placed just feet away and lower than the cage. The north facing window prevents direct sunlight and a vertical window blind controls light even further. This setup is a good combination that pleases everybody!