@Anita 14 In the WildFit introduction call Vishen hosted with Eric Edmeades last week, he actually said that if your aim is to reduce weight (Which I guess it is for you), then do WildFit first and change your relationship with food and then take the remaining 3 months to complete 10X.
That would be more beneficial. If you think you can wait another 2 months to start 10X, I would suggest you do so. 10X is more about building muscle mass and carving the body.
All the best. Thanks.