Welcome to the forums. I hope you find your time here both informative and entertaining. I don't know what types of cameras you purchased but trigger speed will have alot to do with how you set them up. Obviously the faster cameras can be used on trails, whereas the slower ones will probably perform better on feeders or bait. Try putting them on known food sources or at trail intersections. Always avoid pointing them into a rising or setting sun, which will affect performance. Be careful to clear away any foilage from in front of the cameras to avoid false triggers. If you think theft could be a problem, I suggest you invest in lock boxes for each unit. I also have two memory cards for each camera and I never mix them. In other words, I don't use a card in my Stealtcam one time and then use it in the Bushnell the next. Keep them with the same cameras all the time. With seven different cams, it may be beneficial to take the instruction manuals with you when you set up the cams until you get use to them. If you don't have the manuals, you can usually go to the manufacturers website and download them. Above all, have fun and be sure and share your pics with the rest of us addicts here.
Blessings.....Pastorjim