Looonnggg last name

Okay, so I’m not even pregnant (yet!) but I love thinking about baby names. The thing is that my husband and I have a super long last name and we like long, flowery names for girls. Our ln is distinct enough I won’t post it on here but it sounds somewhat similar to something like Pascuchi-Klymow. So how long of a fn do you think we can use without it being an absolute pain for our child? Here are some of our favorites:

[name_f]Lucia[/name_f]- pronounced as loo-See-uh
[name_f]Luciana[/name_f]- pronounced loo-Chah-nuh
[name_f]Seraphina[/name_f]
[name_f]Aurora[/name_f]
[name_f]Lavinia[/name_f]
[name_f]Amaryllis[/name_f]
[name_f]Imogen[/name_f]
[name_f]Annalise[/name_f]
[name_f]Adelina[/name_f]
[name_f]Adriana[/name_f]
[name_f]Lavender[/name_f]

Some of our less favorite, but shorter, names are:
[name_f]Gemma[/name_f]
[name_f]Alice[/name_f]
[name_f]Elise[/name_f]
[name_f]Pearl[/name_f]
[name_f]Ivy[/name_f]

So what do you think? Can we go with one of the long, flowery names or would we be signing our kid up for a lifetime of headaches? Thanks for the feedback!