Future tense to say "I wonder"

[bricks]

Hello, I would just like to double check that I am understanding this. The future tense can be used to express wonderment, yes? Can someone please tell me if these sentences are correct then (please ignore if I've misused ser and estar, I'm currently only interested if the sentence structures are okay):

Que estare hacer. (I wonder what I will do.)
Que hare. (Same, but I tried a different way of saying it.)

Como sere ir alli. (I wonder how I will get there.)
Como ire alli.

Thank you. I think I'm way off here, so corrections are welcome