If he thinks getting married is the best thing to do then that’s a terrible option. Even the. He’ll have to go thru all the visa rubbish. Best to get any of the other visa options.
You’re past the time for using relocation exceptions so you’d have to pay full duty/tax. Suggest you research first before trying to ship. You may find with duty, tax and clearance charges you’re better off buying locally
I opened mine about 7 months ago at BBL and they told me I was lucky as the regulations were to tighten up next day. At the time I just needed my passport and an address. From all the conversations I’m seeing it appears they are starting to require a lot more. Likely related to tightening money laundering restrictions and the flood of dodgy Russian money coming into the country. Anything Russian is going to attract bank compliance departments