When converting the suspension to SPOA, the key benefit to the lift is the articulation you get. So I am assuming you want the lift, but not ability to use the added articulation when going offroad... ok.
Although moving the mounts is the right thing to do, you can use shorter shocks to keep from bottoming them out. Just remember that now the shocks won't extend as far and you will have the opposite problem when the suspension extends.
-Remove all the shocks.
-Drive the zook into a ditch at an angle (use 4wd) and get one front tire to just barely come off the ground while doing the same to the opposite rear tire. Shut it down and apply the e-brake. You can also use a set of car ramps if you want, but the key is to get opposite corners fully extended.
-Get out and you will see that on each axle you have a fully compressed tire and a fully extended tire.
-You can then take measurements for the shocks.
-Add an inch to the extended numbers and remove an inch from the compressed numbers. This will give you a little room so you won't bottom out either way.
-Take those measurements to the local parts place (Autozone, Kragens, O'Rielly, etc) and see if they will let you go through the shock guide to find shocks that meet your needs.