personally, first time, id go for caapi vine and chacruna. erowid say caapi is a better teacher with a much smoother and more agreeable experience. and mhrb as an admixture is apparently for experiernced users, due to the fact dose can easily be overdone and i imagine its similar to acacia as quantities seem similar--tho don't quote me on that
id use a teaspoon of white vinegar as opposed to lemon juice, as the latter doesn't evap off. ive tried a few with lemon and it was just another thing for my stomach to tolerate.
if you do same again then grinding sounds good though i have zilch experience with rue; just what ive read. no doubt rue can be good else folk wouldn't do it i suppose but first time, brewing specifically, id go with cielo caapi plus chacruna...very hard to overdo, all things considered like food and meds and setting etc
"only a closed mind is certain"