Hi, as others have said it is highly unlikely your boars will get along when living as a group with sows, so not worth the risk of fighting and injury.
I once had a group of elderly piggies consisting of two neutered boars age 8 and 7, two spayed sows aged 7 and 6 and two un-neutered sows both age 6, who got along just fine but I put this down to their age. Gloucester, the 7 year old boar was introduced to the others at the age of 7 when his friend died. Jethro the 8 year old boar simply took no notice of him one way or an other. The only pig who was not to keen on his arrival was one of the 6 year old sows but only for a short while. Also they lived in 6 foot by 6 foot pen so had lots of space. If I tried to do this when they were young I have no doubts there would have been carnage!
From my experience pairs of boars and pairs of sows can be kept in the same room without any problems, provided some basic rules are followed: Do not keep the sows above the boars as bits of interesting smelling bedding,etc could drop into the boars accomaodation, do not keep the cages close to one another, and floor time will need to be a seperate room to where the cages are kept with a sperate area provided for the baors and sows.