50i or 60i for slow-motion
 

Hello,

This is the first time I use this camera. I'm in PAL land and I'm shooting a clip.
I will need extensive slow-motion so I guess I will use the field to frame technique. Given that this camera is switchable between NTSC/PAL should i go för 60i to have more temporal info for my slow-mo? The output will be 25p.
Possible the footage will be additionally slowed down using something like Twixtor.

Any problems with this technique that i may encounter?
Should I change tapes on set to have a 50i and a 60i tape?

What problems can I encounter?
Anyone with experience in the slow-mo field with this cam?

Kindest regards,
Vedran