in WAYY over my head =/

Hi all,
Basically i've somehow bagged a job as a sound tech for a rig that goes out to free parties and whatnot. only thing is i'm not great with 5 way systems and i dunno what to do crossover/eq wise to stop it sounding like shit

we have a behringer feedback destroyer (that i dont know how to use but would love to as it could probably help with the feedback we get from the decks), A 31 band EQ, and a BSS FDT-336T for processing. i dont know the box model numbers but i can tell you we have 4x double 18 horn cabs loaded with unknown beyma drivers, 4x double slot ported boxes with loaded Beyma 15G400s, 4 weird midboxes that are a sealed 15G400 and a horn loaded 10" driver that i cant remember the model of but goes up to 5.5khz, and 2 bose 802's that i've resorted to using as tweeters.

Can anyone suggest a way to configure these and/or tell me how to use the feedback destroyer

All help appreciated

smiley5 802s as Tweeters?

Don't know if they would keep up with all them bass cabs and horn loaded mids
Get some good comps if you can!

They don't.. But needs must as our budget is currently 0.

set the rig up in your garden if you can, and have a play with the xovers untill it sound good. if you can post up what cabs you have maybee we can help give you a ruff xover for them......... what amps are you using....

]They're all beyma cabs so if I could find the beyma plans I cud prob find em.. I saw the plans for the bass bins but I can't see em on my phone, its the 218 in this file www.eserviceinfo.com/downloadsm/ ... HORNS.html

As for amps, a large collection of random amps