Gday Larry
The Monsoon link should provide you with winch threading details.
I suggest you stick with the thicker cords as the boat is provided- these stay in the winch drum channels better than thinner line. Also you may find you do not need all the sheet travel available with the winch - if your TX has adjustable endpoints, limit the travel so you only get what you need - saves tangles in the winch, particularly with the jib sheet.
I would recommend a couple of mods:
1) Install a piece of plastic or card ABOVE the rudder servo but BELOW the mainsail sheet - saves some nasty tangles of main sheet in rudder servo (see pic below)
2) Replace the bowsie in the backstay (do the other bowsies if you feel like it) - it WILL break in the first decent gust of wind
3) Seal the hatch with electrical tape or similar to avoid leaks.
Surmount is a great boat IMHO. There are two distinct versions - the earlier version has a smaller round cross-section keel bulb and is very tender in stronger winds (keel bulb weight about 650 grams) the later version has an oval cross-section keel bulb and will hold nearly 900 g of lead shot - sails much better in a blow.
Video of it sailing in heavy weather here:
http://www.youtube.com/watch?v=j4aMejGjKcE