Hey OP! It appears that you should have a gander at some of our forum guidelines. It can be a bit confusing, so no harm done at all, but we don't typically like to allow threads to live that are dedicated to nothing more than getting intoxicated for recreational purposes. We are specifically a resource for Harm Reduction, so when you bring something to the community's attention here at BL, it should, pardon my dramatics, contain a certain element of potential danger to you or another person that you are particularly concerned about.
Experimentation with drugs is a personal journey. No one body is the same and just like anything, as you experience these things more and more, you're going to develop your own unique tastes, just like say, movies or music. I really like Metal (Opioids) for instance, but occasionally I listen to a little Jazz (Stimulants) so long as it's the type that includes interesting time changes throughout (Benzodiazepines). I listen to varying degrees of each musical genre to extents that are both my own and also constantly changing.
So, your question is pretty much impossible to answer with accuracy. What you do need to know:
Tramadol (Ultram) significantly lowers the seizure threshold. Through your experimentation, safety would dictate that you cannot exceed a dosage of 300mg in a single sitting without having to have major concerns for seizure potential.