Weight: more horsepower or less weight?

I have a question for the experts. In the slalom there is a class classification according to power weight. If I want to start in a class up to 15 kg/hp and have a vehicle that is just under 16.4 KG/hp, what makes more sense, weight decrease or increase power?Vehicle:Golf II 53 KW at 870 Kg = 16.42 KG/hp 1. Variant: 53 KW at 800 KG = 15.09 KG/hp 2. Variant 58 KW at 870 KG = 15 KG/hp 3. Variant: a mixture of both What makes your experience for Slal om/Clubslalom more sense? thank you for your tips