Hello everyone! Nice to meet all of you.

I've only recently started playing. I bought the 6*/rainbow ticket yesterday and I'm wondering which knight to pick as my second rainbow (bought Pumpkin the other day). Considering a balance between character design and battle skills/abilities, I've narrowed down my choices to Victoria, Victoria Bride, and Lycoris. Also considering Acacia, but not liking her design as much as the aforementioned three. Would any of them be a good choice?
And I've also been wondering about 5* knights from events. Are they weaker than those you might draw with gems or bought with NG? Not really in the position to buy the 5* ticket at the moment.
Thank you very much for your guidance!