I didn't find the caster issue to be a problem, even after the alignment.... it was more the off set steering and pulling towards the right... but since the alignment, she drives just like before....Thanks for the responses! The weather is looking promising for tomorrow so we are hoping to get the goodies installed...hopefully Mother Nature cooperates!
My initial plan is to drive it as is and see if the decreased caster is annoying. I can always order the arms and add them later as it seems to be a simple bolt-on from Brad's (@blnewt) thread. They look to run around $80ish shipped for the pair.