Shanghai International Airport to Siping Road

Hey, I'll be travelling alone, so taking a taxi is out of option.
Would it be faster to take airport bus line 4 and then change to metro line 10 at Wu Jiao Chang
or should I take the maglev, change to line 2 and then change at Nanjing Donglu to line 10?
I'll arrive on a sunday about 2pm.
Is it recommendable to change at Nanjing Donglu at that time?
I hope someone can help me with this one!
(Oh and there'll be 2 giant suitcases travelling with me...)