Check with the local recycle center. I took about 50 gal there one time and they said to dump it in with the used oil. Sounds like you could probably get the oil out DIY style for a few hundred. Then rent a sawsall to cut up the tank .I would think the max it could be would be $500. Northern tool or harbor freight would sell most of the stuff you need. If you are lucky straps would come with a truck rental