Advise in Articleship

Hi friends
I have cleared P.E. II in 2nd attempt & am doing Articleship in a small firm since the last 2 months. The firm has package for taxation instead of the usual excel sheet entry as well as the proprietor is thinking of introducing a new package in audits. Also he has many clients. But his Company clients are Pvt. Ltd. Companies and provide services.
As a result I will not get to learn anything about Big co.,Public Co.,Banks, audits & other aspects of manufacturing co.,etc.
As far as technology is concerned it is a good firm.But will the experience that I gain be sufficient for my future Professional life? Did I make a mistake by joining a small firm? Should I apply for articleship in a Big firm now or wait until my Ist attempt of C.A. Final.
Mostly I won't go in for auditing field once I complete C.A. However I want to learn the various dimensions of C.A. including audits before making up my mind to join a particular field after clearing C.A. Final.
Kindly give me some suggestion on what to do further.
Thanking U all in advance.