BTW - of the options you listed as possibles, one is CROS ... In your case you'd need BiCROS at the very least, and frankly (having done a lot of research myself) I think it's a total waste of time for you.
CROS and BiCROS are really meant for people who have SSD (Single Sided Deafness, or SSD with very mild hearing loss on other side). Even for those with SSD, it's mainly beneficial for those who had bilateral normal hearing and then lost one side due to trauma/illness etc. as teens or adults.
Based on your numbers there's no way you'd actually be able to be fitted for a BiCROS at any rate - you'd need to have less than 40db SNHL on one side to even be considered as a BiCROS candidate.
(At least it's one thing you can cross off your list)
Also - I'd strongly recommend getting a referral to an Audiologist who specializes in both BAHA and CI and be assessed by them directly. Not all Audies are familiar with, or work with BAHA or CI as part of their everyday practice. You'll want to talk with an Audie who has many many clients who have BAHAs and CIs not only so that you can have you're questions answered accurately, but also because once you decide on one, you'll need to see someone skilled in doing adjustments to the processor.