Decisions with vertical labret

So, i think i want to get my first face piercing and it will be a vertical labret but the thing is it’s hard to find a the right material for curved barbell where i live and i need to buy them online. I reckon i will buy few different size for when pierced and downsized. I know it will be hard to guess but maybe i could buy extra sizes as well just to be safe. Any piercer or people with vertical labret can help me decide which sizes to get? I put photo of my lip and just for reference the size with a 6.5 and 8 mm regular labret post. Also i should get them in 16g?

And i did some photoshop to see in few different position too. which position you reckon looks good on my lips? Or is it gonna be anatomy dependent ?

Thank you :)