It's all relative
Ideally a liveweight of closer to 85Kg will give you more pork BUT you've got to weigh things up - is it worth the cost of feeding over the next wee while (cos it won't put much more weight on them in cold weather) and the hassle factor when (if) the snow comes worth it for a few extra Kg's ? IMHO the meat will be the same quality, any extra weight from extra feeding now is likely to go straight to fat anyway.
The smallest of my 3 killed out at 46Kg if that helps ?
I collected my pork yesterday (apart from 1 which has been put to curing) and the butcher said he'd never seen such nice pork, with as little fat in his life (granted he was only in his early 30's, if that
) he called it 'stunning'
and said he'd actually brought some butchers from his other shop up to see the carcasses. 2 pigs completely filled my small chest freezer and more than half of my tall upright one - don't stress yourself trying to get the weights up now, just enjoy your hard work.
BTW the GOS x Large Black is soooooooooo nice
HTH
Karen