D&D 5E Flight ability: Does this make the Aarakocra overpowered?

[Werebat]

Hi all,
I found this thread very helpful because my pg has reached sorcerer level 5, and now I can choose fly spell.
Understanding the limits of this spell is fundamental, and so I'm deciding to use it more for exploring rather than fighting, but in case it happens I found this combo of spells that I would love to have your opinion about:
- fly
- feather fall
- mirror image
- mage armor

These should help me enough to use my pg's two offensive spells from above:
- fireball
- scorching ray

In case something could go wrong and FF should avoid damage from falling and plus my pg is a tiefling and darkness could cover the gentle fall to the ground.

What do you think about?

I think Counterspelling feather fall can be hilarious.

 

[Omone]

So fun!
Even if it would be mad to fight against a wizard using flying...
I realized I didn't put counterspell in my list...
Damn! So few choices for a sorcerer