Interesting thinking. If you do this, it will be powerful(though, I'm sure you're already aware of that.)
5 seeds is plenty. The seeds are usually covered with a fuzz that protects the seeds. This fuzz contains quite poisonous compounds and
needs to be scraped off(or with another approach)to avoid unnecessary, unpleasant nausea and possibly a ruined experiment and experience. The inner flesh also contains nauseating compounds naturally, mostly derivatives, even LSA itself can exert these effects.
Syrian rue tea will probably potentiate HBWR but also contains nauseating compounds within that plant as well. Some possible stomach cramping and possibly some purging will occur with both of these plants at the doses you have planned. The interaction should be okay, but be prepared for some possible uneasy feelings.
Smoking the 20mg of 40x enhanced salvia leaf might be more powerful due to the combination, already. HBWR usually takes its course slowly, but much more prominent(once its peaks) with the inhibiting effects of rue.
Not sure about eating acacia root bark.. are you mixing it with another source of saturated material? It will probably upset your digestion with everything else going on within your body. Maybe wait 1 hour or 2 to begin eating that. Or maybe after purging?
'What's going to happen?' 'Something wonderful.'
Skip the manual, now, where's the master switch?
We are interstellar stardust, the re-dox co-factors of existence. Serve the sacred laws of the universe before your time comes to an end. Oh yes, you shall be rewarded.