LGB87

Hi all, Hoping for some help, my father was born in Britain in 1965 and moved to Australia in the same year as a ‘£10 pom’. He lived in Australia until he was 13 in 1978 before coming back to the UK. I am considering applying for Australian Citizenship By Descent, I was born in 1987 in the UK. I have travelled with my father to Australia before but with my UK citizenship. Before doing so, I just want to check if I’m eligible for ‘Citizenship by descent’ or any blocks I might experience? I have a few family/cousins in the same situation now living in Australia but their parents arranged their citizenship/ passport at a much younger age. Thank you!