If at all possible, I would upgrade. A coach should be able to point you in the right direction and tell you what type of skate you should be looking at, although i would be wary of anyone who insists on a specific brand. Alternatively, check out what other skaters of a similar level are wearing and go with something similar to the majority (there's probably one or two with top of the range skates crippling their poor child, and one or two with beginner skates like yourself). If money is an issue, see if anyone else has just outgrown a pair and would be willing to sell them on secondhand (better than ebay as your child can try them on before you buy). Be aware that the kids shoe size for street shoes may differ from their skate size as there's a lot of variation between brands.
The smaller and lighter a skater is, the lower level skates they can get away with, but i wouldn't stay in recreational skates for jumps and spins unless absolutely neccessary finanically