That looks great Bee. Something to look forward to.The good thing about WRs are that they finish out well on forage and a little feed, whereas other breeds may require penning and a lot of feed. There's a reason why it's WR genetics in the standard broiler CX and not BRs or Buckeyes. Their density of meat fibers and their muscling at the breast and thigh is unparalleled, IMO.
And, a mature, spent layer hen is nearly as big as the cocks of any other breed out there. Here are two carcasses side by side...one is one half of a 6 yr old WR hen(hatchery stock) and the other is a whole carcass of 3 yr old RIR/BO cross cockbird. Note the length and fullness of her breast filets and even the size of the thighs....the hen is on the right. That hen had been living on a few bites of feed only each evening and the rest of her feed was foraged and she had been fed like that for a few months prior to this processing.
Lefty, I bought some of Ken Weaver's White Rocks locally. A local BYC buddy had bought eggs. This was last month. Now they are six months old and getting big The cockerel is still a teen.