Yes net carbs. Go ahead and subtract the fiber out. Getting enough fiber is important and when people go for total carbs they often short change the fiber.
As for sugar alcohols, that's up to you. I count all carbs except fiber, including glycerine, sugar alcohols, and full yogurt carbs. They say it has minimal impact on blood sugar, but minimal is different then no impact. Some people have no problem at all though.
Since you are already to your goal and a little past you can probably afford to up your carbs by 10g a week, then when you hit a spot you are going to gain, or you just feel ick, back it off by 5.
Remember to, try to get the best nutricion for your carb dollar. In other words choose fruits and whole grains instead of sugars or white bread because for the same amount of carbs you would get alot more vitamins and so on. Look at kellog's all bran too. a 1/3 cup serving is 24g carb, but 13 of those are pure fiber (they should rename it colon blow
)
I found some WASA whole grain crackers today. They have 10g carb, 2 fiber for a cracker the size of a gram cracker, and kind of thick. I would only have half of one at a time on my carb count, but you could look for things like that for upping yours. Spread some salmon, tuna salad, or dip on top. Make sure to get that fresh produce in, and maybe stock up on frozen berries now that winter hits.