FabseMI don't have a wide foot, only a bit higher (no idea what that bone is called) than the average
tried on some BnE's last week and felt quite comfy, liked the light weight of them, but damn they're ugly as fuck
Basically full tilt only have 3 boots. The new Seth and wallisch, is one then the band e and konflict ect are one, then there is the wider shell the booter. So not many options. They are all a mid width at between 99-101mm depending if you fall in the lower end of the size or the top. That I the other strange thing te sizing. They use 8mm gaps rather then 10 mm gaps like everyone else so you often en up in a diggernt shell size then normal hence why it is 99-101mm.
So this hopefully shows you how important it I to get fitted. Go to a goo fitter and do not even suggest boots you have looked at let him select the best boots. Then if you really want to try something he ha not recommended you coul ask to but remember there will be a reason try do not recommend them.
Get custom footbeds fitted too. They are the most important part. Do not skimp out here.
An as for weight it really does not matter. The only time you will feel it is walking around. You will tell no difference when skiing.