Transition from Right Start to Math u see. Do I need to do Right Start Geometry?

My daughter will be 9 this fall, and is just about to complete Right Start Level E.  She will technically be grade 4 in the fall, but in Math she is grade 5.  On the SCM Curriculum Guide, it is suggested to do Your Business Math (which I will do with her).  Also, it suggests Doing Right Start Geometry or moving directly to Math U See Epsilon. She is definitely mathematically inclined, and truly enjoys math.  My question is:  If I am planning to continue on with Math U See from here on out, will we not cover the things done in Right Start Geometry? Or, is Right Start Geometry a really good way to firm up all of the concepts we have learned thus far, and if we don’t do them it, will we be leaving a gap? Does anyone have experience with both of these curriculums? If I feel that she has a pretty firm grip on what we have done, would it just be a waste of time and money?

Thanks!