Hi,
I would like to respond to your proposal - point 1.
I provide the UK&EU VAT services for non-residents; I am the UK-based VAT tax agent. I can investigate your UK&EU tax obligations, prepare tax treatment and suitable application tailored to your needs, calculate your UK&EU VAT liability, register you where required, submit tax returns /offer to hire the tax representative.
I am experienced in new 7/21 EU e-commerce rules, postponed import rules etc.
Don't hesitate to contact me with any questions.
With Regards
Hana