i need to go lower

this my 2003 rsx on tru hart street plus coilovers. i understand i can delete one or two of the collars on my coilovers but not really wanting to do that unless i have to. i’ve been reading that people use 4” 50k swift springs to absolutely slam their car and i wanted to know if a shorter spring will actually get me lower then what i am/if it’s worth the money. any input would be great, i don’t have much knowledge on swift springs.