First off, 10 grams mimosa is way moar than you should ever need. I'd suggest to dial in your rue dose first before you attempt trying to push the mimosa up anywhere near that high.
It sound like you only did one pull of the material into the water? You generally want to boil the bark and the seeds 3 times for 30 minutes each boil, combine all the water and reduce to a drinkable amount.
So, boil in fresh water, filter, save the water, boil again in fresh water, filter, save the water, boil one moar time in fresh water, filter, save the water. Combine the water from all three boils and cook down to the point where you can easily take it as a shot.
This way you get all the alkaloids out of the plant material and into the water, then you concentrate the solution till it's an easily doseable amount.
You can cook the seeds and bark together or separately. 30 minute boils is sufficient for both. Dosage averages around 3 grams each, but if you find you aren't getting strong effect, up the rue first, as when you properly inhibit MAO, a tiny bit of DMT goes a very long ways. I'd suggest you brew at least 2-3 doses per person so you have an extra on hand if you purge too soon or want to go deeper or what have you. Try dosing the rue and mimosa tea at the same time, or at least cut down that 30 minute gap to 10-15 or less for best results.
Hope that helps.