Leaving aside the moral and legal issues, as a parent yourself, I’d advise you to consider the worst case scenarios and deal with them.
If you were to die, do you have life insurance for your family? If you are disabled, short or long term, or way in the future develop incontinence or other issues caused or exacerbated by childbirth, what kind of insurance or financial support can you obtain? Will the purchasing ‘parents’ pay for that? What about lost earnings, replacement childcare for your own children etc. How will these be financed ?
Maternity care is failing in large parts of the U.K. I’m not scaremongering. Look at recent
CQC review of National maternity services in England. Are you prepared to rely on local NHS or will you have to travel? Do you want a private birth in London or even a private midwife or scans. What about physiotherapist etc if you need it in pregnancy and post natal care that may be unavailable on NHS. Eg prolapse etc.
There are numerous other things to think about including whether you’re happy to have these men in attendance at birth, have a say in your maternity care or birth choices, whether you will see the child again after birth , how your existing children will feel about it etc etc.
Fools rush in where angels fear to tread …,