but his movement on the ground with dashes is a lil lacking n i find myself doing air dashes to close huge gaps when fighting lambdas...
I don't see how that is really related to the thread topic, but no, Hakumen isn't very mobile on the ground, but his airdash covers a great distance. Only problem is that while airdashing, you can't attack or defend, which makes you very vulnerable. Don't be dash happy with Hakumen, sometimes a few quick hops are all you need to close someone into the corner. But, definitely use air dashes as in air mixups just to prolong meter gain and stay a good distance away. Such as super jumping near straight up and throwing some j.a's, then when your opponent is close to you in the air, air dash over their head to the other side.
Mastering hakumen's movement is a mix of hop/623a/airdashing. All of these can be mixed and linked. Perhaps a double 623a, then instant air dashing, 623a on land, then a short hop. Just mix it up and experiment, Extend gives you more meter gain to experiment with such things