I had my remaining upper teeth extracted and an immediate denture placed on Juy 11. I got a new interim upper denture on October 10. I am doing just fine (although I must confess that I do not like not having upper teeth and sometimes I feel sad about it). My dentist coordinated the entire case and worked in consultation with my oral surgeon. The results are truly amazing! In actuality, only the first month or so was bad.
I think you need to find a good dentist to take complete charge of your case, including a referral to an oral surgeon for the extractions and the making, placement and adjustment of an immediate denture and, perhaps, a permanent one as well. That way, your care will be fully coordinated. If you like, you can consult with the oral surgeon about the possibility of implants and an implant supported denture. Generally, however, it is not possible to get the implants and implant supported denture at the time of the extraction of remaining teeth.
It is possible to have a comfortable and fully functional upper denture without implants. That's what I have now. I will decide later whether to incur the time, pain and expense of implants and an implant supported denture. By the way, from what I have learned, two implants will not be sufficient to support a denture or to otherwise replace all of your upper teeth. Therefore, your consultation with the implant doctor seems a bit "off".
Focus on the fact that, after it is all done, you will look and feel better than you do now. You can hardly enjoy your life now or your retirement later without teeth. I know it's hard. But, like most of us, you really don't have a choice. So, summon your courage -- find another dentist, have a consultation, and get on with it. You will be better for it. Look forward to eating hard food again (albeit not right away).