A lot depends on when you next want and can cope with piglets!
If you breed her now you will get piglets in July which
will fatten in time for Xmas pork, leave it later and you will have piglets to take thro winter, i work on it being a six month cycle i.r nearly 4 months pregnant and 2 months raising litter and work out from their. I try not to have piglets in early autumn as they can be a bugger to shift as no-one wants them thro the winter and aim my litters at jan mar & july, so long as you don't let your sows get fat it can be done.
hth
mandy