you about right with your rate.
Be careful when you take somebody on....this can be a minefield, most important is trust.
You need to have insurance for them...holiday, sick pay and so on..etc, we been going for over 6 years and only now have we got a 1st class team.
What happens when they are on holiday or sick...you able to cover them?
I suggest you and the Mrs get this side of the ground first, once built up, take on someone to work alongside you, see how it goes then take on somebody else allowing the Mrs to take a managaging role, but able to step in, also bringing in more work....etc
If you want any further advice give us a call....later in the day is better, or leave a message and will call you back, as out most of the day...this time of year
Paul