Proxy rotator

Hi, I need a local socks4 proxies Rotator tool. that do the following using my OWN [login to view URL] [login to view URL] <-> Polipo 1 <-> Proxy 1 Client <----> HAproxy <-> Polipo 2 <-> Proxy 2 <-> Polipo n <-> Proxy n I want exactly same idea but instead of using TOR. am going to use my OWN socks4 list.