well I agree remove the dog leg,,
I have not worked with that wood so hoping I can give advice that will apply,,
seems like you will have to go with what the stave will give,,,
if you need it longer as you tiller,, then splice extensions,,
not sure how that wood does with sinew ,, but that might be an option if you are going to make a bow shorter than expected,,
also bend in the handle might be good,,