What you have done seems to be good. But make sure that you backup the archive logs and then take a hot level0 backup

My way would be

Sun: Level0
Mon: Level2
Tue: Level2
Wed: Level1
Thu: Level2
Fri: Level2
Sat: Level1

Depending on the archive log generation, backup the archivelogs every 6hrs (your Choice).

Once in the begining, middle and end of the months, if you can afford, take a cold backup.

If he has more backup space, then you can initiate a logical backups too.

Sam