For the next similar tournament, I would suggest using a timer of 12+6+1 ("rapid"), which is what Hellight and I used for many games, and which really allows you to do everything you need to do and forces you to think quickly. Or at least 10+5+1. After all, 8+4+1 often limits many possibilities purely physically. A slight increase will only add to the spectacle, I assure you.
For the next similar tournament, I would suggest using a timer of 12+6+1 ("rapid"), which is what Hellight and I used for many games, and which really allows you to do everything you need to do and forces you to think quickly. Or at least 10+5+1. After all, 8+4+1 often limits many possibilities purely physically. A slight increase will only add to the spectacle, I assure you.