Hi, Austin. Can you tell us exactly what model Line 6 amp you have? That will help us help you determine if this is a problem you can ameliorate keeping your amp or if buying a new one is really necessary. This being said, threads where people say they need more power out of their existing amps are common, it's something most of us have experienced, too, and my personal experience is that bootstrapping the existing gear rarely works (unless we're talking micing the amp or running its line out into the PA) and the best - and ultimately most cost-effective approach - for the long term is to bite the bullet, sell the current amp, and buy the one you really need. Regarding cost, can you save $25 a week even? If yes, by June, you'd have $500 + what you can sell your amp for and these days you can buy a lot of amp, new or used, for that scratch.
Disclaimers: I'm happy to share whatever relevant gear knowledge or experience I have. Genuflection/payment/proof of worthiness neither sought nor accepted. I don't design, build, market, sell or endorse for pay any new music product or service. I occasionally sell personal used gear. I am an unpaid endorser of SoundScaper Productions and Godfrey Daniels Guitarworks.