Never tried the elite series. Personally I have had horrible luck with Bushnell both in the product and customer service areas. I have heard the elite series is better than some of their scopes in the past. Just my personal experience and in all fairness it was quite a few years ago. Maybe they've changed.
I have had many Bushnell scopes with good results, I currently have an Elite 3000 3-9 on my .243. All I will say is my 300 wby is getting a 4-16 Pentax Lightseeker. For the same money as the 4200, I feel it is a superior scope with the best warranty in the business. Optics are unbeatable for the price. Check em out, they also make a Pioneer line with high quality glass for around $200.
When placing a trail camera don't just look for a well used trail. What you want to do is look for a freshly used trail off by itself that goes from a north facing ridge, thick forest, brushy knob or some other similar bedding area to a food source. Don't forget water sources. Especially in the summer months the deer need water so look for a good trail going down too a creek surrounded by thick cover and place the camera 100 yards up from the water source.
Scent control is very important...