Finally amping my front stage...

[ant the ninja]

Hey guys, So I have a pair of crescendo ccx 6.5's and the tweets in my front doors but I've always ran off HU power but now with my new box I need them to be louder to keep up with my sub stage. I have this mb quart FX4.50 my friend gave me because he didn't feel like installing it. I know its a crazy budget mids/highs amp but I figured I might as well try it out. Any tips for setting it up? I have my deck hpf crossed at 80hz so I figured thats around what I would cross it at the amp. But what should I set the LPH on the amp too? Its setting the gain thats making me nervous because I really dont want to blow these ccx's since it took me so long to find someone selling them on here. Any advice?