i m interested in lowering my integra 97. although i m sort of low budget, but i would be interested to know more about lowering and invest it right the first time rather than having problem later

so basically, what should i replace? the spring or the shock? can i use the stock shock and just replace the spring ? should i get coil over or else? what budget do i need to spend in order to get a good lowering car?

thanks.