hey, ive seen some good deals on speakers and a sub lately so i just wanted to see what you guys think before i pull the trigger...

also i have a pioneer deh-p77dh deck right now oh ya and i drive a 2000 4 door blazer

i can get 4 of the Polk db651 6.5" speakers for $70 total, and also the infinity basslink for $150 (first one, not the basslink 2) im just looking for sound quality, not trying to shatter any records

so do you guys think its a good deal for $220 total for 4 6.5" Polk 2 ways and the basslink sub? will the polk's fit? will it make for good sound quality? should i disconnect my front 4x6 speakers? i dont know what to do!

any input is appreciated, i dont know much about car audio

THANKS!