Hey,
I noticed that you are from France... YAY! That makes two of us!
My Cat would probably try each at least once, but I think SWIY will be doing that, so:
First off, my Cat has little experience with
San Pedro, but has tried
mescaline recently so he'll use that as a yard stick for San Pedro (as it's main active ingredient is Mescaline).
My Cat'd try the
Salvia first: some say that it is a big rush, so it might just give a preview of what other psychedelics will do, but because it short acting if anything does go wrong, at least it won't be for long.
Then my Cat would try the Mescaline: for my Cat it was longer lasting, but also not so much a rush as Salvia was.
Morning glory / Hawaiian: Unless my Cat is mistaken, they both contain
LSA, so it will be a similar experience. My Cat found LSA (in
HBWR) to be the most euphoric of all those SWIY uncle has at disposition. Plus it lasts long, and has a nice after glow the day after. The downside is that "nasty" chemicals in the seeds can give nausea; for my Cat it never lasted to long and wasn't much of a draw back, but it was systematic; Maryjuana may also alleviate the nausea, not stop it, but make it easier to cope with.
Mixing these with each other wouldn't be the greatest of ideas, but I don't believe it would be to harmful. But I will point out that my cat does like:
chewing his HBWR seeds, then smokes a joint or two until the effects get noticed. then when he's got a nice trip going on, well hit a
bong of Salvia (or a ballon of
Nitrous Oxide). It quite strong, and my Cat finds it very pleasant, plus my Cat only smokes Salvia if he is already tripping, it's to short in effect to be use on it's own (IMyCat'sHO)
Meow =^.^=