Thanks, that should be a good starting point. Somehow I tend to underexpose, so I will better give it a stop more.
I use the syrup. Actually I've never seen the thinner one.
I first looked it up on massive dev chart but there were no times for sheet film and I was not sure if I can use the same like for 35mm or 120.
The other thing with the agitation.. is it better to do rotary development? I've got a cheap Jobo CPE but no drum with a magnet so far.