Dosage recommendation factors

Planning on tripping tomorrow with a friend while walking a trail. I have some 150μg gel tabs, and am debating taking one full for myself or splitting one in half and just taking that. I have had severely profound experiences off of 1/3 same tab combined with thc, and am opting not to mix it with any weed this time. And have also taken 80% of a tab and no weed with less memorable effects. I mainly just want geometric visuals to look at. Any advice?