choosing struts

[96civicex]

i just got my 17's on and i need to lower my car a little. i already have a set of gc limited edition coilovers and i wanted to know the best place for struts. also i know everyone on here loves koni yellows but i don't really want to spend that much so would the koni reds work well with the gc coilovers? i read that a strut needs to have the same basic stiffness as the spring so would that work together? thanks