Our House vocal ranges???

[RollingStorm]

Hey y'all, our school is doing Our House this year as the school production and I was hoping for a shot at the lead, but I can't tell by ear if Joe Casey's vocal range goes above an E4 (my highest note ) also if it would be considered unorthodox to switch his and Sarah's harmonies around as I'm fairly certain the parts I know I can't sing are in 'It must be love' and 'The Sun and the Rain' when they do their harmonies and Joe has a higher part. Thanks! :)