[Margaret the dwarf]

Since our dwarf hybrid is getting older we were wondering if we should eventually remove her from her multiple level cage(with tubes) and buy her a single level long housing? Also will she stop using the various tubes as she gets older or will she still be able to climb ok when she gets into her golden years. She just turned 1yr old today. Thanks for any help/info. We love her and want her to live comfortably as possible as she ages