Look, the acting on your reel is solid. I think just leave it as it is until you can get more English speaking scenes. Strong acting is strong acting in any language so just send the reel and stand by your work. Individual self tape scenes are more for actors who haven't got the professional footage yet.
If there's a self tape where you do a strong and clear Aussie accent, maybe you'd want to send that in addition to the reel just so they can see you can do it - labeled as Aussie Accent Scene.
The way the two extra scenes look on your casting networks profile next to your reel is totally fine though!
Yes, check out IMDBpro usually but sometimes they're not publicly listed yet. You can also see things on the Screen Australia websites, but often, things just aren't public yet, so you need to keep connected with other actors and know that your agent will be on top of submitting you for current projects.