You have time, there's no rush ;)
What i had in mind myself when i saw your first wip was maybe start with the 3d logo close to the camera, then move it a bit out, maybe do a small spin on the way, stop the spin and the zoom (maybe a small movement going on but nothing radical) and do the sniff-animation, then tranform it into the 2d-logo. That was my mindset, but you do whatever you think looks best.