Cascades will be whether good or bad here, especially with only five colours. It will cause the production of the special candies to occur more often, however the special candies that you need for combinations may accidentally get activated.
Combine wrapped candy with wrapped candy first as it is the hardest order to collect compared to the other two. Complete the first two orders as quickly as possible, as with only five colours, accidental cascades occur more frequently.
It may be hard to combine candies when you have more spaces, but with more spaces, it is easier to make a colour bomb.