you can get any vpip/pfr you want without open limping.
if you are aiming for 25/17, well of course it depends on what ur current vpip/pfr is.if ur 20/17, then you would not raise anymore hands, but call more raises or complete more in the sb. if ur 20/12, then you would just raise 5% more hands. btw..i dunno if ur confused or not, but open limping means you open the action with a limp, meaning there are no bets before you.