Dillinger type lower control arms

I'm in the process of getting the front end low on my 69 Dart. I need to get the front wheels in some so that i can get the front end low enough. My plan was to build lower control arms similar to what Dillinger was producing but maybe an inch shorter. I would also decrease the length of my tubular upper arms by the same amount. Would this affect anything if i shortened them the same amount? I have my drop spindles on order and hopefully i will get a better idea of how far in i need to move them once i put the spindles on.