Is this a realistic tummy tuck expectation for a contoured/hourglass look?

Thank you for the good question and pictures. Based on the photographs, you seem to be a good candidate for tummy tuck surgery  and should expect a very nice outcome, assuming a well executed procedure.  The goal photographs you have posted are not realistically achievable however.
Generally, the tummy tuck operation involves removal of excess skin/adipose tissue of the lower abdominal wall and re approximation of the abdominal wall muscles that may have spread with pregnancies and/or weight gain/loss. Liposuctioning is often used as a tool during the procedure.
Generally speaking, the “ideal” patient for tummy tuck surgery is one who has completed pregnancies, is psycho socially/emotionally/financially stable, has an excellent social support system surrounding him/her, is capable of arranging enough recovery time, does not smoke and who has reached a long-term stable weight.
***Results of these procedures will vary from one patient to another and from one plastic surgeon to another as well.  Therefore, your plastic surgeon will be in the best position to address your concerns  and questions in this regard.  It will be important that you understand the probable outcome of the procedure as well as the limitations associated with each option (achieve a sense of realistic expectations) prior to proceeding. The best way to achieve a sense of realistic expectations may be to ask your plastic surgeon what he/she might expect your abdominal wall to look like after the planned procedure; this may be best done with the help of before/after photographs of previous patients.  Failure to achieve realistic expectations prior to surgery may be a  cause of patient satisfaction, despite a well executed and complication free procedure. 
 Best wishes. 

Thank you for your question and photos. From your photos you appear to be a good candidate for a tummy tuck and lipo, since you do not plan on any future pregnancies. I think your desired after photo is not a realistic expectation of outcome from this procedure. Be sure you meet with a board certified plastic surgeon.