1) It's probably not going to be possible to have its orbit inclined to such an extent to make any difference. I think the solar wind is generally constant regardless of orbital inclination.
2) Again, probably not. There's a lot of stuff inside a gas giant, enough to drive convection currents in its conducting interior for billions of years. It may lose a bit of strength but I'd guess that most jovian fields would survive to the end of the star's life. The fields of rocky planets however might not (Mars' field is already dead, Earth's would probably last at least a couple more billion years, and Venus' might actually *start up* in a few billion years time as it cools down enough to start compositional convection in its core).
2) Again, probably not. There's a lot of stuff inside a gas giant, enough to drive convection currents in its conducting interior for billions of years. It may lose a bit of strength but I'd guess that most jovian fields would survive to the end of the star's life. The fields of rocky planets however might not (Mars' field is already dead, Earth's would probably last at least a couple more billion years, and Venus' might actually *start up* in a few billion years time as it cools down enough to start compositional convection in its core).