Misc Rigid Nintendo region settings clash regarding Club Nintendo & 3DS - am I shafted? HALP!

[SG]

OK, so I live in the UK and have an imported US 3DS XL. On my Wii, I set my region as Brazil as the postcode formats are identical to the UK so I could use my debit card to buy stuff on there (postcode for where card is registered is needed).

Well, I did this with my 3DS as well (although it turns out that they don't want my postcode on the 3DS e-Shop so I didn't need to do it). The thing is, I also have a Club Nintendo account and it's registered to a friend's address in the US so that I can get physical rewards from Club Nintendo as she'll ship them over to me. BUT... the e-Shop on the 3DS wants me to link my online account to my e-Shop account. Once that's done, I can't change my region. If I change my region to the States I also lose my current balance. I'm worried that the region for the e-Shop could conflict with my region for my 3DS.

Also, I believe that there are certain apps that aren't available to those who live in Brazil... I know that Netflix is one, but what about any others? I'm not bothered about Netflix but I don't want to miss out on anything so maybe I should change my 3DS region to the States and cut my losses.

Can someone please help me out here?

 

[Senbei Norimaki]

US eshop is region locked by credit card. Only US credit cards will work on the US eshop. As for netflix that app doesn't work outside of the US.