Yep, I don't think he had planned to kill her either. Just doesn't sit right.
I also don't think he ever truly intended on being with Toni. I think alot of it was just a way to lie to everyone to hush them up. This includes what he said to his business partners... you know how some people are caught in a sticky situation so they just keep lying? He couldn't bring himself to tell the truth "Oh no, I'm just screwing around with her, leading her on. Yeah mate, she thinks I'm all serious but really, who does she think she is? I have a few others too, so why would I settle for her? Plus I have a wife and as long as she doesn't find out I'm home and hosed!!"
He couldn't say that, so he had to lie.
I am sure he was trying to come up with a way to get money, but not so he could be with her. Perhaps he thought Toni might be able to help get some money for him if she thought it would let him come to her... then he could just dump her. He doesn't seem to be a man of high morals afterall.
I have known people who will use someones love for them to get money before, and then they come up with an excuse as to why they can't be together... seen it happen a bit. I don't think GBC would be above doing that.