A/C and PS delete?

I'm putting together a 2012 truck 5.7 for my 71 dart. Is there a way to remove the A/C and the PS? Belt length needed? Add an idler pulley?
The later cars had electric power steering, so they had a delete Idler from the factory. Shouldn't be hard to find a used one.. ebay maybe. I'm pretty sure that I'm running a Gates k060764 on Hoopty, which has both deleted.
edit.. I'm questioning the K060764... I have a picture and it's a K060770 in the picture. But I think I wasn't happy with it and wanted a little tighter. I'll have to dbl check that.