Character Building for 'I Do?'

In my radio play there are two main obvious characters which are a couple, these two are going to dominate the whole play and we will have a great bond between the two.

ManName: Joe Grimshaw
Age: 28
Job: worked as a builder since he was 17years old. Trained at a college when he left school and now is a fully trained builder and works for a big company.
Location: Kings norton, Birmingham
Looks: Joe is around 6ft tall and he is big build and muscly due to him being a builder. He has brown hair and has tanned skin, hes rough and ready looking and has stubble on his face.
Personality: Joe is a loud and bubbly person and seems to be a bit of a joker especially when around his friends. He likes to wind up his wife alot of the time and is just a typical man as he likes to go down to the pub to play pool and have a few beers with his mates.
Hobbies: Attends the gym a few times a week to keep fit.

Woman
name: Louise Grimshaw
age: 25
Job: Trained as a hairdresser at the age of 19 and has a job in a salon in Harborne.
Location: Kings Norton, Birmingham
Looks: Louise is around 5'5 and she is quite a petite build. She has blonde hair and blue eyes and is a pretty girl. She is quite faired skinned and has to wear glasses for reading.
Personality: Louise is a fun girl to be around, she is very down to earth and friendly. She is strong minded and can be serious and fun when she needs to be.
Hobbies: She often goes swimming with her mates and a social hobbie she has is going to resturants and trying out differnt cuisines.