I found it hard to mount mine to the dash as its not a smooth surface and has a lot of polish so the 3mm stick pads wouldn't hold. First acceleration the camera came flying at me
The suction mount is the best idea as you can mount it outside the car or on the windscreen. If you get the gopro app for your phone then you can tell the camera its upside down!
As above, you can see the shot from your phone and you can start recording from your phone. I got the remote as well but I haven't even turned it on as the phone is just as handy.