Blepharoplasty to Tighten Fragile Cheeks Skin?

It really depends here how much skin we are talking about and how much wrinkles there are. It is unrealistic to think it can tighten the entire cheek area. But you can get an improvement for the lower eyelid area.
So it is difficult to tell you what you can achieve without a proper exam, especially with what you are describing.
Good luck.

The problem you are describing sounds like you may have festoons and not excess skin of the lower lid. Festooning is a problem that we see in an older population but, in someone with your medical history of steroid use anything is possible. Attempting to remove or elevate skin of the cheek using blepharoplasty techniques is a dangerous proposition. You will likely not really address the problem and can easily cause further damage to your eyelid.