Okay, let's solve the food concern. There's something called a SEED CORRAL. Their new site wouldn't give me the link address, so you find it at walmart.com for US$17.99. When you search, put BIRD SEED CORRAL. It'll be listed. The SAME thing is sold on Drs Foster and Smith site for over US$30.
It attaches over any horizontal bars. Of water is a concern, you need a bird butler type.
Put the feeder trays as low as possible. Surround them at the cage with an elastic fabric/mesh seed catcher/skirt that usually costs between US$10 and US$20 online.
Next, the poop issue must be dealt with. Buy an office chair/carpet cover of plastic. Often, IT and computer users have them to help chairs roll better. I don't know the name. These aresold either at office supply stores or occasionally at thrift stores. Place this under you cage.
If your bird isn't flinging food, you probably don't need the seed corral and skirt just the floor protector.
I have some birds that are flingers and these have helped! My birdroom is nearer and cleaner. As well, it actually saves money on wasted food. Allow me to suggest potty training.