I'm slamming my Daihatsu some time next month.

I'm gonna be using this airbag kit to do it.
http://m.ebay.co.uk/itm/261540184414?txnId

I need some help as I need to find some shocks for the rear that will be able to accommodate the lowering of 5cm and then raise to 3cm and then to stock, Everyday all-day if need be.