This:
All should be fine if you'll get missing 10 medals in next tower event and get 2x bricks. You'll have to wait for that though.
Wind tower is in April and thunder in June, that's a lot time to pull some Kamihime from gacha, hard to say what your team will look like.
Oh, the beloved by everyone Siegfried's mission (in next GO batch she'll be at least more usefull in stages before last). Good thing wind GO is one of the easiest.