I know its hard no having mummy & daddy time but for me - Id rather DD happily go to bed later than fight it (making us both frustrated) going earlier!
Eva has always gone to bed 8pm-ish. Both my girls are up super early now too thats qld spring/summer for you though!
I think youd find that Ava would adjust her daytime sleeps as she needed to - so maybe just try the later bedtime and see how you go??