Hi Vic
I was diagnosed in September but had a holiday booked and paid for in November. My team recommended I take the holiday, put me on tabs then started my treatments in December that was back in 2010. I had surgery chemo then rads, some people have to wait ages for rads anyway so I really don't think you should have a problem. Talk to your team, I'm sure they will reassure you.
All the best with whatever you decide.
Diana