Those are exactly what I was talking about - if you don't plan on installing them all the way around, use the longer springs on the rears if you can make them fit (if the kit actually has longer springs for the front, many don't.)... they'll already be pre-loaded because the installed height will be different for them, which will make them even slightly stiffer.
I can even walk you through removing the OEM springs without a coil compressor
It's really not hard, and it's not even dangerous... plus, you don't need a compressor to put coil overs on either, since you just turn the perches all the way down, put it all back together, then raise the perches after they're installed.
But, yes, those should work... and even if they're not exactly what you need, they'll get you through until you can afford something else, at which point you can sell them to some ricer who thinks it's OK to just slap coils on stock shocks and slam the car on them.