My $2 but I own my corner.
I'm with Fester wrt using spacers. Do it once and do it right.
I had a safari snorkel but took it off last year considering how I never go in deep water anyway, it's a warm fuzzy blanket I didn't need and to be honest I don't like the look of a snorkel on the WJ. It's a personal choice like your bumpers.
Dan (Broadz) has a custom one which quite respectable. He's in Morwell btw.
A steering dampener is not needed if your lift and steering geometry is fine. I've been running without one since 2012. If it sits down low , you're gonna end up bashing it up anyway. A dampener will not fix DWs neither. Again, correct geometry and tight bushings all round is paramount.
You also may experience harsh rides with short arms and may also need an adjustable track bar. Suspension work will be the major part of your build and therefore important that you do a complete job on it rather than looking for parts, bits and bobs later in trying to make it work.
Since you're looking at a headunit replacement, Broadz is an expert. See his build here
http://www.ausjeepoffroad.com/forum/...ghlight=Broads
http://www.ausjeepoffroad.com/forum/...le+din&page=15
https://www.facebook.com/broadz?fref=photo
Keep us updated!!