Take a look at the US army Uniform prior to these new ones. Leather boots and a pair of rip stop pants that bag at the bottom before they go into the boot. Tight pants are your worst enemy. You want loose and baggy with at least 2" all around. The snake will start retracting its fangs the instant it hits something. reducing your risk of it hitting your skin or getting in a full hit.
Also the baggy pants will help with the heat. Chaps would be HOT and could cause problems as bad as a bite.
Then just mind the basic rules of walking throught the undergrowth. Step on rocks and logs instead of over them, dont walk into brush where you cant see atleast 3' in front of you and never never..........oh wait .......always always check the area before you squat!!!!! If you dont you will find out that you and your buddies arent that close after all.
Ian