HI Anne,
I would go for it....it gives you flexibility, to help manage teh dawn phenonomen as best as we can artificiaaly. It can be quite a lit of work, but it is not that much different from what someone on MDI would do anyway, if they were carb counting.
Carb counting is the thing that you should be reasonably confident with before starting the pump...but if you are doing this already, i would say go for it!
Do you know where about you will be when you are back in the UK? I am sure they will suppoty your son with the pump, but some hospitals, really only seem to use one pump, whilst others gie you teh choice...might be worth asking on here to see, if there is someone from your new area who can advice what happens at the local hospital?
8.1 will not be the worst, by a long, long way that teh hospital will have seen, but it is certainly something that should be improved upon...as you can prbably tell, I love my pump, so would certainly go for it!