Question about selecting recips

I have about six bred heifers all of which are due to calve around February and March. 2 are commercial Red Angus, 2 are shorthorn, 1 is a crossbred and 1 is a half blood simmi. My question is, will it be ok to use them as recips after they calve for the first time? All of them are on the larger side of being moderate framed and are pretty large in their hip. These embryos are out of cows and bulls that don't usually throw big calves.

Thanks for the advice

we have used Virgin heifers as recips for heifer safe embryos

Our vets maintain that they have better conception rates with virgin heifers, but young ,cycling cows work well too.

Have used virgin heifers to 10+ year old cows doesn't seem to matter as long as they are cows that calve on a normal interval and have stuck to an ai service in there lifetime. Have had cows that just won't stick to an ai but stick to the natural service every time. So much goes into embryos sticking Mother Nature seems to decide which ones stick. Some real good years to some not so good years and the cows were managed the same way.