It's all in and working. GPS works great, Sat radio took a little tweaking on the stock antenna fitting to make it fit a little tighter on the new unit. The wireless rear camera comes on instantly, but occasionally has a little interference but nothing I can't live with. Once the weather warms I am going to experiment with antenna placement to see if gets better.
The Tview monitors went in VERY easily, and with the help of a fish tape were easily able to route the RCA and power cables where I wanted them. Picture quality is exceptional, and they were around $100 at Amazon.
The Head Unit requires a PhD to run however. There are sooooo many configurable options, it will take days or weeks to learn all the ins and outs. My only complaint is while using Sat radio, you get the station info but not the song and artist.
All in all, was not a bad install. Thanks to the previous poster for his wisdom.