Another option is to install combine1090 on rpi(2). Utilizing combine1090 allows you the future benefit of easily “combining” 
any additional feeders you decide to bring online.
You can review the Combining multiple receivers into one map - Combine1090 thread for all the details.
(combine1090 and tar1090 are both created and maintained by @wiedehopf, who graciously shares these great tools with the community!)