Private Key Generator Modification

I need a modified version of the existing private key generator site (similar to https://privatekeygenerator.cryptoscann.com/). The modifications include:

- Accept random BTC address after payment.
- Display BTC address on confirmation page.
- Change payment process from the existing site.

Ideal Skills and Experience:
- Experience with cryptocurrency payment integration.
- Familiarity with private key generation and security.
- Web development skills to modify existing site.
- UI/UX design experience is a plus.

Please share your relevant experience and approach.