It would help some to hear what kinds of bows you prefer in other woods, whether you want to 3d shoot, or still hunt, or stand/ambush hunt.
67" Ntn would be more than plenty for a stiff handled bow to draw 29" smoothly. 1 1/2" to midlimb, depending on other elements like length is usually enough width to make hunting weight bows, up to 60#.
I personally prefer to have the arrow pass about 1" above center for a bow over 64", tending more towards dimensional center as the bow length is shortened. 1" above would be plenty for a 67", 2 1/2" I'd view as excessive for a 4" handle.
If there's some feature in the stave which requires the arrow pass be placed as you described, I'd shorten the overall lenght the 1" or so necessary to put the arrow pass about 1" to 1 1/2" above center. By my reckoning that would yield about 66" NTN.
I like a 4" L stiff handle, 3/4" W x 1 1/4" D to 1 1/2" D at the arrow pass, 2" L fades which move slightly, generous bend on the inner 2/3rds of the limb, stiff and agressively narrowed outer 3rd. For 60# @ 29" I'd start with 1 5/8" W layout and perhaps width tiller once I get up to 24" draw on the tree or so and see where I am in terms of set.
Hope this helps.