So since Discount tires wont mount my tires because i'm going to be putting spacers on the axles i have to jack the whole jeep off the ground so i can take all the tires off to get the new tires put on my stock rims. How many jacks would i need to do this?!

 

How about 1 jack and 4 jack stands.

 

What he said!!

 

Or jack up one side, replace... then other side, replace... then... you get the idea.