Here's the scale thing to consider again. A 1/10 will run through that log pile in probably less than 30sec. A 1/24 will probably take about 2min or more.
Plenty of stuff on YouTube to give you ideas. I know you're deciding between an Everest and SCX24. I can tell you're leaning towards a 1/10, but you simply don't have the budget to turn a stock 1/10 into a capable crawler. For the price of the Everest, you could easily modify an SCX24 into an...