ARM II: Patients receive doxorubicin hydrochloride and cyclophosphamide as in arm I and bevacizumab IV over 30-90 minutes on day 1. Treatment repeats every 2 or 3 weeks for 4 courses. Beginning 3 weeks later, patients then receive paclitaxel as in arm I and bevacizumab IV over 30-90 minutes on day 1. Treatment with paclitaxel and bevacizumab repeats every 3 weeks for 4 courses.