Thanks guys
you were all very helpful.
I ended up just eating the rue seed crushed up with 100mg of spice, and about 15 min later had another 100mg of spice because it was having little effect.
the experience ended up being very strange and unexpected, like some kind of amazing shroomy trip, although i felt sort of stable and at no point was i out of my body and in the field of hyperspace which i almost always am when i smoke changer, not sure about being there for 3 hours anyway though.
I'm gonna do this again and again and again until i get it just right!!
"Pay attention. And keep breathing." Terence McKenna