Well, I think lots of us are going through this or will, so maybe we can share some ideas with each other. I agree about the WEIGHTS, plus I am doing some TONING EXERCISES each morning upon waking. I also do some more as the day goes on (a few minutes here & there whenever I think of it).
Aside from that -- the first thing that came to my mind when I read your post was -- HIDE IT!
At this point, that is all I can do. I am gonna buy some smaller bras with uplift and maybe a little under-padding. I have bought a couple of those special briefs and will be buying some bicycle shorts in the future to help hold things in a bit. Body-shapers may work well for this too (think I'll try them as well). I will always have to wear something that covers my upper arms down to my elbows; yes, I have the bat-wings now. I am calling these my "camouflage" techniques ...
And lastly -- TIME: I have heard others say that in time your skin can go in a bit more. Now it won't all go back perfectly, but once you maintain awhile, it can get a bit better. Some will opt for SURGERY, but that is a personal choice, and not everyone can or will want to go that route (Edit2Add: becuz of my age, health, and finances, this is not an option for me).
I hope this helps you a bit -- trust me, I know how you feel, becuz I'm in the same boat and I'm not finished yet. More so though, I have to tell you that I am with those that say that if this is the price I have to pay for losing this weight and feeling so much better & healthier; it is still very worth it to me, so I guess "acceptance" may be the key word here ...