Satellite Best practices

Hello , we have been using satellite for more than 3 years and since some time it has become a priority service that needs to be up and running 24x7 , we use it for deployments for different departments of the company and also for patching. We have a custom software channel that we clone from base channel and it is used with an activation key for new systems so basically all the servers are registered to that channel that is also cloned quarterly for patching, last week we had an issue after the clone and the build process started failing because of this issue, we are now trying to find the best way to use satellite for builds and patching without affecting builds because of cloning channels fail.

im thinking to have a base channel used for builds and then clone a new channel every quarter for patching ,that will isolate builds from patching however i will have to move systems across channels every quarter , what do you think it would be the best way of doing this ?

We are also thinking to have one more satellite for a staging environmnet where we make all the changes and after we check everything is ok we move them to prod, an inter satellite sync, have any of you used this technology ? any recommendation ?

last but not least, we also need a 24x7 service , we are running satellite in a virtual machine and we are trying to evaluate moving to an HA environment, we havent found much information about this kind of implementation, is any of you using satellite with HA?

Thanks a lot for your time and help!