I presume that you have the rman going on. On such case, if the time frame is kind of precise, when the process gets run, then invoke the rman couple of time during the process timeframe and delete the logs as you go.

I have a system, that would dump a tone of log every night. So, my policy was to delete all the logs that are older than one week. This run happens four times a day, hence keeping every other databases in good shape. Or you can delete the archive logs when you do your level 0.

This should release some space for you.

Again, as you may know, running rman during the peak is also a bit resource intensive too :(

Thanx,
Sam