Small 4 post rack

Looking for a new amp for our church audio equipment: https://www.sweetwater.com/store/detail/CDi4-300BL--crown-cdi-drivecore-4300bl-power-amplifier?mrkgadid=1000000&mrkgcl=28&mrkgen=gdsa&mrkgbflag=0&mrkgcat=livesound&lighting&acctid=21700000001645388&dskeywordid=2417783542239&lid=39700081948184289&ds_s_kwgid=58700008888188063&device=c&network=g&matchtype=&adpos=largenumber&locationid=9021636&creative=750524656465&targetid=aud-522492682534:dsa-2417783542239&campaignid=22518349859&awsearchcpc=1&gclsrc=aw.ds&gad_source=1&gad_campaignid=22518349859&gbraid=0AAAAAD_RQYlUNfS0uP__X5yPBNw4sy0Rk&gclid=CjwKCAjwzevPBhBaEiwAplAxvl23b2wMU2-DYylF8Tf1J21xbIdhPXh5bABgf8n_IqgeIM9uuv82NRoCDbwQAvD_BwE

We are also looking to get a small floor rack or wall mountable rack with a battery backup (preferably rack mount) - does anyone have any recommendations for these two products? Ideally I would like the amp, battery backup as well as a couple of other pieces of equipment to fit in.

The battery backup: https://www.bestbuy.com/product/cyberpower-pfc-sinewave-cp2000pfcrm2u-2000va-rack-mountable-ups-black/JX8P9XL758/sku/12566272?ref=212&loc=marketplace

The rack I was looking at: https://navepoint.com/navepoint-12u-swing-gate-wallmount-rack/?sku=00405919&utm_medium=cpc&utm_source=google&utm_campaign=Shopping%20-%20Mid%20Margin&keyword=&gad_source=1&gad_campaignid=23670393015&gbraid=0AAAAAD1Dq8zvtDe55JUyxX-IpqO3VGsVV&gclid=CjwKCAjwwpDQBhAuEiwAa-4Wo0oahkDrpWquwfg1WZzH5mEwM9r_DuQvBGwEB_VSkHC9aWX_Xy3vCBoCcMMQAvD_BwE

My biggest concern was whether or not the UPS (battery backup) would fit in here.

Any other recommendations? Are power distribution controls still used now a days to turn things on and off in sequence?