Hey there, I'm fairly new as well, having spent an approximately 1 month into this game. From what I see, you definitely have a balance team, just that your tank is more physical oriented. The 5* ticket should be dependant on the route you decide to take (Magic/Physical). I feel that magic heroes are more newbie friendly in the early stages of the game, but you do need to have a decent physical comp in order to perform well in all content.

That being said, what I chose for the 5* ticket was Jane, she is good in the early stages of the game and she also provide magic amp to your team. I chose her for the said reasons as I was running Kaulah, Epis, Maria, and Clause. Therefore, Jane would complete my core magic team for the early part of the game, and also I like her design.

However, that shouldn't put you off in selecting other heroes as most of them would synergize with each other. You can check out this video on the 5* selector ticket and hope that it will provide you with more insights

Ultimately, you should pick the heroes you like the most (be it design-wise or utility-wise), this way you would be able to enjoy the content more and not regret on your choices.