Suspension install timing questions

I've bought a OME kit and I'm ready to install, except I forgot to order new leaf spring eye bolts. The bolts will be here next week. I was thinking of doing the front suspension this weekend and waiting till next weekend to install the rear.

Are there any major issues in splitting the install? Do I need wait till the rear is installed to get the alignment, or is alignment only affected by the front? If I do wait for the rear to do an alignment, is driving on it for a week going cause any negative effects? I'm installing 880 springs, so there shouldn't be too much of a lift difference.

Thanks for your time.