800cc Breast Implants with Breast Lift for Patient with Slight Ptosis?

I have a hard time focusing on your question, as I can't get past the size of the implant your choosing. 800cc implants are gigantic. Not only will they look incredibly unnatural, but they will stretch out your breast tissue, supporting ligaments and skin. If you ever want them out, you will certainly need an extensive lift to deal with the loss of elasticity of breast skin.
If you currently need a breast lift, then you should get a breast lift. You should not overcompensate with really large implants.
Best of luck.

If your breasts don't sag now, they certainly will after placement of the 800 cc implant and passage of time.

Hi there-
I think you need to very carefully consider the long term implications of using such large implants....
If these were not described to you, you should probably ask why...
The average woman would be much better off having a well performed breast lift and more reasonably sized implants.