Taint nothing wrong with 100mcg of LSD. It's a whole different drug experience than 200~400mcg, for different sets and settings, but quite enjoyable in its own right.
80mg of MDMA, on the other hand, feels skimpy to me. 15mg of ketamine indeed has measurable psychotropic effects, but they're subtle enough to be unnoticeable to all but the severely depressed, and this is decidedly a sub-recreational dose.
If you're inexperienced with both drugs, especially two that can produce mental states so alien to the inexperienced that they can be scary, for chrissakes get comfortable with each of them individually before combo'ing them! This is basic harm reduction, folx

For the LSD, try 50mcg, then 100mcg, then 150mcg, then 200, on separate occasions. When you're trying ketamine, try the same dose gradations except in milligrams. If you've thoroughly enjoyed both drugs at all these doses, and feel you have a good grip on how both of these drugs affect you, try 50mg of ketamine at the peak (T+3~4h) of your favorite LSD dose.
An full-on acidic k-hole, on many hundreds of micrograms of LSD and 300~400mg ketamine dose(s), is one glorious and unforgettable experience, but you'll lose all touch with consensus reality, and I recommend you have a sober sitter, a safe and private environment, and at least half a day with no serious responsibilities or obligations.