Thanks for your output that already shows so many different ways to style the logo. 

I gave you all individual feedback already. Overall I can say that I like a rocket that is flying in a 45degree top/right direction the most (check surya) . Also, for the font choices please take a look at L C P s Design. This one has the best font for GuesRocket so far. 

Thanks and keep on "rocking" , 

Philipp