Mosschops, this other cm who lives further away sounds like she could be ideal for you. I would just say though that just because the other one you saw only had her own 2, I don't necessarily think she wouldn't be as nice to your ds, especially as there is a fair bit of age difference. Also, I suspect that quite of lot of childminders only look into doing childminding so that they can be at home with their own, I suppose it was honest of her to say that, but not perhaps the thing to say to "sell herself". I must admit when my mindee's mother first came to see me and asked why I had decided on doing childminding, I didn't give her any bullshit, I said that I gave up my job because it wasn't financially viable for me to work and pay for childcare for my 2 so I looked into a job which I could do from home, I like children anyway, think most children take to me etc, so I am giving it a go. Good job I'm not in sales!
Anyway, this other cm does sound good, so I really hope it works out for you.