Is this a good dental-care setup for a teenager?

I'm trying to properly improve my dental hygiene. I've always brushed pretty hard, and my mum says I brush too much/too aggressively, so I want to switch to a better routine.

I'm currently considering:

- Oral-B Pro 3 electric toothbrush — mainly because it has a pressure sensor and timer

- Colgate Total fluoride toothpaste

- ORACURA OC150 LITE / OC200 LITE water flosser — mainly because I don't want a bunch of unnecessary attachments

- A soft/sensitive replacement brush head when the included one wears out

I don't currently have bleeding gums, pain, sensitivity, or obvious gum recession. My lower front teeth also seem to sit quite far back, and I'm planning to get orthodontic treatment in the future (probably aligners, possibly braces).

Is this setup overkill, or is it a good basic routine?

Also, if you've used any of these products, would you recommend them or choose something different around the same price?

I'm mainly looking for good dental health rather than whitening/appearance products.