I am sure that other wads will work much better for you..
however just a side note, always keep a back up of your duke3d.cfg (it can sometimes get messed up when trying new wads). Also not every one is going to work. I do not believe there is a compatibility list but i've had at least 40 working. As long as they come with a grp and con/gam file then there is a high chance they'll work.
My suggestion for TC's.
WG Realms
Amazing conversion for duke 3d. There is a few new weapons but the levels themselves are truly breath taking. From the detail to the music, to the difficulty, everything is balanced well. It is 5 levels long, however some of the levels are pretty long. It is a must!!!
Starship Troopers
A good TC. The levels at first seem kind of like an amatuer made them, but as the game goes on they start to become a little more involved and less shit. The last level is a lot of fun. You are stuck on a planet fighting off aliens for 5 minutes, while planes fly over head and drop supplies (and bombs), before you are rescued.
Doom Duke.
Not a bad TC, the levels are not great, there is a couple of good ones. So dont be discouraged by the first few. The game seems to be difficult if you die in a level and then start the level again, as it isn't really set up for that to happen. If you want to keep your guns then save often.
There is just a few that i enjoy. I am sure that you will have no trouble finding them. If you find some good ones let me know and i'll give them a shot.