Thanks and yeah i had to figure out where i needed to jump from without the traps and it was a hundred times easier then.
I know I need to upgrade my traps its just my previous dungeon I had spinner(lv 16), red guard(lv 13), and homing cannon(lv10) and I was using that base for upgrades so my these traps are weak.
Yeah, if you haven't been practicing vs solo traps or even trapless layouts, start doing it. You'll learn more about what your layout has to offer (even without traps). And as you explore, you'll notice some places are harder to get to than others. And that usually hints toward a good totem location. All this is in my guide. I hope you take a look =)
Oh, and your current layout does have a pit. Basically if you jump in from the top row, you can never return.
However, I'm not sure how to maximize it's use and couldn't find a useful totem placement to abuse it =(