So they got you covered on many points. The sena , the XM radio, Guages, broken hinge, etc
As to the difficulty in doing things depends on your ablities mechanically. The guages are fairly simple after removing the instument panel. Then just plug unplug replace with your choice. The trans filter is also not that difficult if you do minor engine work
full cover would be fine especially if not using for extended time
the LED lights are very bright and if you see another spyder just take a look at them. If yellowish not LED

Congrats on the new ryde... don't let the buying experience cloud your ryde as you will see how much longer rydes will wash that all away.