G.B.
You can expect an adult person to eat about 1/2lb of sliced meat if there are sides that they like. If they only like the ham then they can eat more and more. So if they like the sides you are planning I would think you will have enough meat.
I will give you one word of advice.....low or slow. Depending on what neck of the USA you are from it is different. We call is a low oven if the temp is low but I have heard some call it a slow oven too.
I can tell you that if you heat it more slowly the brownsugar/glaze will not burn to a crisp if it is left in the oven too long. I used a recipe for Apricot Mustard Ham from Taste of Home for years. My hubby hates it but it soooo odd flavored to me that I just love it.
Here is a recipe that is very similar, I think that I put clove things in their pod like things, they look almost like a sticker, then I mixed the preserves and dry mustard and smeared that goo on the ham with the cloves spread out and stuck in, then I used my hand to squish the brown sugar onto it. Made my way the brown sugar can easily burn to a black crisp finish that is not yummy if the oven is too hot.....
http://allrecipes.com/recipe/apricot-brown-sugar-ham/
This is a blog type post at Taste of Home. This mom was wanting everyone to post their favorite ham recipes and there are lots of them that sound very yummy.
http://community.tasteofhome.com/community_forums/f/30/p/...