Application u/s 219 crpc.

Firstly, remember that under Section 219 of Cr.P.C., only up to 3 offences of the same kind occurring within the space of 12 months can be tried together in a single trial. In your case, there are 7 offences.

To answer your second query, the judgment of the Supreme Court in the case of Damodar S. Prabhu  v.  Sayed Babalal H., (2010) 5 SCC 663 : AIR 2010 SC 1907 : 2010 Cri LJ 2860, has NOT been overruled so far by any subsequent judgment of a larger Bench of the Supreme Court.

Thirdly, as per the recent (1^st August 2014) 3-Judge Bench decision of the Supreme Court in the case of Dashrath Rupsingh Rathod vs. State of Maharashtra [CRIMINAL APPEAL NO. 2287 OF 2009], a cheque-bouncing case can be filed ONLY in the court in whose jurisdiction the bank account exists on which the cheque was drawn (i.e., from which account, the cheque was issued). Therefore, if all the 7 cheques were issued from the same bank account, then all the 7 cases can be filed in the same court which has jurisdiction over the bank in which that account exists. These cases cannot be filed in different courts in such a case.