In addition to E-5 base pay, you will receive BAS (as mentioned above) which is currently around $220/month. Your BAH will be based on the location of your dependents if you have any. Your E-5 BAH can be calculated here. OTS does not qualify for per diem. IIRC, you should get family separation pay ($250/month) since you are away from your dependents for more than 30 days.