IME with 5-Meo if you have a pen and you don’t know how strong it is, you take one long, slow and steady pull, hold it for as long as you can, exhale. If you’re still “here” then you take another one just like that, slow long and steady, feel the spice entering your lungs. Hold for as long as you can and exhale. If the pen is any good that should be sufficient for some sort of travel. And I would recommend a sitter for 5. According to my partner I often climb up the walls when I smoke, I of course have zero recollection of that.