your question is odd...cutting springs and not using a rebound spacer is counter to what you are trying to attain.....if you want to lower the front end you would cut the normal ride springs and then install spacers under the damper rod (along with top out springs) which will lower the front end, make spring rate stiffer and change geometry... it is fairly basic but you will have some issues to consider, spring rate, ride height-geometry changes,fluid flow through the spacers put under the damper rod...
it would be helpful to know what machine, what type of bike you are building and what else you plan on doing to the frame,forks and rear suspension??
a few inches done PROPERLY is possible ...
joe