Thanks for all the help guys! I didn't really think there would be any problems but just making sure.
Some additional information;
- I'm not crossing any borders, it's only an hour and a bit drive away from me. I'll be bringing it inside the anti-static bag and box that it originally came in.
- Power supply is now a downgraded Corsair 500w (can't remember exact model, cost me about $60). I was originally using a Corsair HX 750W but swapped it into my new computer as it was serving me well. I don't think the GTX 970 should be touching the limit of the 500W as it wont be OC'd. My i5 2500k is also on factory clock speeds.
- When I get back I'll be doing a clean Windows 8.1, so shouldn't really be a problem with drivers.