Can I use half the kit now and half the kit later by seperating the paint and reactor in half?
No. We use a very accurate scale to ensure that you get exactly the right amount of paint and reactor. If you try and split it up and do not get it exactly correct, your paint will not dry correctly and will either look terrible or will chip away quickly. As stated above, head over to Sears or similar and pick up a pair of jackstands for $20 and do it all at once.