hiya
you have all rights over the surname and would personally put yours down, my son had my maiden name then when we had our daughter my now hubby insisted she have his surname as our wedding was booked so i did, but my son had to have his surname changed by deed poll. we are now on our 5th child so we worked out, but my cousin went and put her daughters name in her boyfriend surname and when they split up it has caused soo many problems as her now ex refuses to allow Megan to change her name to my cousins surname, also her has loads more rights as she has his surname her can just take her etc etc and my cousin learned a big lesson there caused shes also met a lovely man who cares for her daughter they are getting married and expecting, ex is now way out of picture doesnt see daughter at all now for 4 years and shes stuc with his surname until she marries or turns 18 so she can change it by deed poll.
do what you feel best my hun take care x x x x