Baby shower at 35 weeks?

My sister lives in California and won't be visiting home to Texas until mid-August. I'm due September 16th, but want to wait for her to throw my baby shower on August 13th. Is that cutting it too close? Should I just have it sooner without her? I think she is making a special trip down just for me since I told her I wanted her to come and I told her I wanted to wait for her and plan it around her visit, but I didn't realize when I said that that she wouldn't be coming until mid August. Has anybody else thrown a baby shower that late?