Lift bastard pack??

I want to get my bastard pack together this weekend, I have a second and third leaf out of a S-10. I know im supposed to use the S-10 main but Id rather just use what I have. Now if I take the second and third leaf and put the 2nd s10 leaf under XJ main, Then 2nd XJ leaf, then 3rd S-10 leaf, and take out 3rd XJ leaf. Where would I be looking at height wise? Would this be terrible on my springs? Im going to replace them whenever I find a house with a garage and driveway. Thanks Guys.