Hi there! No worries, you’re not being a bother. To start with, there’s no definitely no age limit on wearing hanfu. As for the question of cultural appropriation  – I’ve addressed the topic in my previous posts here, here, and here – please check them out! Personally, I feel that in your situation, there shouldn’t be any issues ^^ However, do keep in mind that I only speak for myself and there may be differing opinions. Hope this helps!