Nanning to Hanoi Best Transportation Mode

Hi all, traveling 2 couples Nanning to Hanoi last weekend of Feb23-24 Not decided yet on means of travel. Options are:

Overnight train from Nanning to Hanoi,

Bus runs daily to Hanoi but dislike maniacal drivers on back roads.

Took Taxi from Dongxiang once, it was a white knuckle nitemare.

Ferry from Beihai to Haiphong hear it runs several times a week.?

Air service may not be available from Nanning Airport to Hanoi

Have V.N. Visa in hand Monday and aware of the Holiday crush.

Helpful ADVICE requested. Thanks All for any help..

Nanning to Hanoi Best Transportation Mode

Comfortable N careful driver:express bus Nanning -Hanoi(Changeover at yu yi immigration

Bus ticketing:077-5508331/5508332/5508333/2102445,Bus office and terminal,located around Nanning railway station

Fare Yuan120