I actually totally forgot about that ! I very rarely play FMC, so no point for me having wizard version. Will try to upload it tomorrow !
For OIs I use the same : put everything on anyone that's attacking midfield or striker. Or let it to you assistant, up to you.
And for the best between Viper and Mamba... No idea, they both are quite efficient and similar, one being more offensive than the other.
Quick update btw : when using black mamba, put "play offside" on, given the high d-line it's not a bad idea (if you have defenders with good positionning it's actually very good). And for training, I'm trying the all-out attack and seems to help preventing having 5ccc and not scoring... I'll make some more extensive testing here
have fun guys !