IDM ( internet download manager ) for proxy server -- 2

I need you to develop some software for me. I would like this software to be developed for Linux. my ISP is limiting my download speed for each connection so when I use IDM that's very fast but anything else its not so my idea is I'm doing a proxy server using squid primarily for caching so if we can implement IDM so when the user open anything he will have multiple connection downloading one file I want to know if it's feasible and what are the pros and cons