Hi dada2cole
You have gotten some responses from people who are either hard of hearing or deaf and their responses are based on their own personal experience, feel and so on, you SHOULD NOT base your son life based on these facts, you should not listen to us, heard of hearing (hoh)/deaf people who are NOT QUALIFIED to give you best advise.
I suggest that you get a 2nd opinion on your son hearing situation and may be a 3rd, one professional opinion is NOT enough to change your son life forever, you won it to your son to do the best for him, as you said you are a proud father, no matter how you solve this situation, you are a dad and this is your son, you are proud of him no matter what, he did not choice to be hoh/deaf, he is struggling like all of us here, he is trying to do his best, even though he is responding to your whisper and so on, you never know what 8 months old is actually getting and why he is responding, it does not matter if he heard some sounds, that's is NOT ENOUGH, he needs to hear the vowels, and most importantly he needs to HEAR the CONSONANTS and I'm pretty sure he is and will not hear them without help, I'm not sure how much is his hearing loss, but you said severe to profound, no matter what you do, no matter what hearing aid (HA) you get him even a $10,000 one it will never give him good consonants sounds, do not go by the hypes you heard/read so far that some are doing good and they were severe to profound when they were born, how do you what they meant with great?m how do you define GREAT in their replies, they are not certified professionals to give you the right advise for you as you are a HEARING parent to a near deaf child, you are in an emotional stat now and want to cling to any hope.
Take few months and do more research, check with several specialists, talk to some drs beside audiologists and see the good and the bad about Cochlear implants, keep in mind that your son is 8 months now and he is already severe to profound, his hearing will never get better but most likely to get worse, HA will not give him much and he will always struggle in his life, Cochlear implants may be the best option for him since you and his mom are both hearing, are you both ready to learn ASL (even though you must let him learn it just in case), are you ready to spend hours and $$$$ in special schools, special educational programs, it's going to be 18-20 years from now, are you ready to join in this fight and at the end after years from now, you may end up with Cochlear implants, think about it as whole and add what you and his mom can do for him in the long run and what his sisters/brother can contribute.
There are many scientific research that showed having Cochlear implants at much younger age is better than having it at older age, try to find these papers or PMs me for more info
I wish you the best
PS: I was born normal hearing, I lost much of my hearing within a year or so 12 years back, I'm 35 now, my loss was 90db both ears, it affected my life in the last 10-12 years I had to change career and so on, I finally had my Cochlear America in my right one over 3 weeks back, was activated around 10 days back and doing amazing, this is just my experience, some others my have different ones but still I have not seen one cochlear users that was not happy with it in a way or other, while I know there are many don't like them but never got in touch with one, I did research for one year before jumping in, I was told that longer I wait the worse the results that I will get, but remember I was born with normal hearing so I acquired the spoken language. I was told it will be much harder for people who were born with severe/profound hearing loss to get good results when they do it at late age.