And those are the right questions.
Either will be high-risk if it’s really low budget.
If it’s recorded only, find a good local lighter/shooter who can either ask your questions while standing alongside the camera, or arrange a phone hookup into an IFB earpiece – ideally also recorded on a discrete audio track.
Live will cost you, even if it’s over broadband you’ll want a good chunk of bandwidth and a solid connection. Don’t even think about doing this over wireless. And the good local lighter/shooter will still be important.