just a quick read, if u have sugar left over add more oxidizer, some if there is white oxidizer left add more sugar, some where in the rage 2/3oxy to 1/2 fuel.
Also add iron oxide of the catalysis as sulphur can set the rocket off on its own which isn’t good and very unsafe, just rust works as good.
As for the power of this, sugar rockets are pretty poor. composite rockets using multi layers of different compounds is what they do now days, but here in the UK you don’t have chance of every trying it, laws.
But be careful it doesn’t blow up.
But if you'll looking into it have look at hybrid rockets, using solid and gas, nitrogen oxide and a solid plastic is what some use, works as well, and law and a lot a safer if done correctly.