Recommend you post on the RnY forum message board. At the onset you will lose weight due to restriction and malabsorption. Around 1/5 to 2 years, you're malabsorption should be resolved, aside from you needing lots and lots of vitamins for the rest of your life.
I understand that the diet is "boring" up front but you are reintroduced to foods over a period of months.
The RnY message forum has a lot of good info.