Hard to make that bike look much better,but apes just might do it.At 6'4 you'd probably be safe with the 18's,I'm 5'10 and have 16's.There are times I wish I would have gone higher
Apes! Had 18" Phsyco Chubbies from Wild1inc on my 99 softail. Best made bar I've ever owned...recently put 14" Apes on my 2007 Heritage from same place...Love them too. I'm 6'2" with an arm length around 38" and the 18" bars were plenty comfortable. By the way, I agree with everyone else, your bike is fantastic.
I'm in the middle of installing 16" Nash Smart Gimps on 1.5" risers. I'm 6'1". I will be able to let you know in a week or 2 how they are. Got to get cables ordered up tomorrow.
I have Carlini's (flyin' apes 18" x 1.25") waiting for time to be installed... I'm
6'3" . I think your ride would look sick with Carlini's Ganster apes 18" x 1.25" too, those are bent inwards instead of outwards like the flyin' apes, believe me, you won't be dissapointed on the extra $$$ ($350), they are worth every extra penny.