I tend to rate all my color negative film 2/3 stop over if doing portraiture work. It makes the skin tones really open up.
Shoot your 400H at ASA 250 and for the love of film, use an incident meter! This is critical!
400H over exposed, probably shot at f/5.6, 50mm Pre-ASPH E46 Lux
You can do the same thing with 160 S, rate it at 100 ASA. 2/3 over exposure seems to be the magic number with Fuji film. I can't get Ektar to do the same thing.
160 S, ASA 100 -- Shot at f/2.8 50mm Pre-ASPH E46 Lux
The "pastel" tones are there, it's just a matter of getting your image tweaked a bit.