How to install Membase under another directory other than /opt/membase?

I'm using Membase 1.7.2, and encountered two questions,
1. I want to install Membase under another directory other than /opt/membase, for example under /usr/local/membase;
2. Membase is started by the default user - membase. If I want to start it with another user, such as victor, what should I do?

As I know, the scripts within the rpm package are all pointing to /opt/membase and use membase as process owner. To resolve the 2 questions, do I need to rebuild the source codes and how?

Thanks,

Victor