C70 Suspension Overhaul Springs Vs Coils.

I'm in need of some suspension upgrades/replacement. I want to go lower no matter what option. For new sachs struts and he spring seats and mounts and rear shock mounts it's around $520ish on fcpeuro. Now the only coils I can find for my 2001 is d2 coilovers. I would still need the hd seats and mounts. But can you get much lower on the coils than the it'd springs or hr springs with sachs struts.

I'm not going for stanced but rather more flush less monster truck look.

Thanks