I need to get rid of this large log from my backyard. About 26' long, 3' and 4' in diameter at the ends. Rotten on the outside but seems to be fairly solid on the inside. Got a couple of quotes from landscaping companies and they are too high for me. Can I burn it in place? It does not have be done in 1 day although I probably can't leave it burning overnight. How long do you think it might take me to burn it at least to an extent that I can cut the rest with my 18" chainsaw into pieces that I can try to remove myself?