designing and building a mega boiler need help.....

Well thanks to all who are reading this, I've never posted before so here goes.... You may say that I'm crazy but join the club, I'm volunteering at a Christian kids camp called God's mountain in Missouri, I was about to hook up an OWB with an oil gun to a couple of the buildings....when I thought what if I made a mega boiler that would heat the whole camp.....crazy yes...The camp supervisor showed me an 8x16' tank on top of the hill 1/4" mild steel, and my wheels started turning, there is also a 7x14' tank the first tank could hold 6100 gallons of water, the second 4100 gallons.....The requirement, a total of 26952 sq. feet of different buildings to heat, minimum 18192 sq. ft if you subtract the garage(1400), gym(3360), and one of the basements(4000)... So there is a ton of requirement, here is my idea, I would like to build a switzer/garn style boiler inside the 6100 gallon tank, heating primarily from wood, but also set up with an oil gun(we have a ton of used motor oil 1300 gallons plus, and it keeps comin)the 6100 gallon tank would run in tandom with the 4100 gallon tank for extra storage. The second thought is actually running a geothermal loop(horizontal...we have property) and using the 55 degree ground water in the summer through the heat exchangers inside of our buildings, this would cool the buildings in the summer, winter comes we would turn off the geothermal loop and fire up the boiler and use that for heat. The question here is would that work? I've heard that the temperature differance is not extreme enough to cool off the air, but 55 degree water should cool off the air shouldn't it....second if I did do this about how much piping and what size would I need...? Okay back to the boiler, I would like to know your thoughts on firebox size and piping size as far as the heat exhangers inside the boiler example switzer uses i believe 9 2" tubes and 3 passes. the garn uses a single 4" maybe, never seen pictures.... how would I calculate to know how big the firebox would have to be to heat up 10,000 gallons of water...I know I know....you are saying this guy is loco.....yup...but for Jesus...... I would appeciate any dialog you all could offer, I find that others are normally smarter than I so I need your help thank you so much
Bryan

side note I also have a couple of other tanks that I could use one 8x16' two around 9x25' crazy big tanks....just throwin that out there

Thanks to all who responded, I was able to talk to Gary Switzer.....Just so you guys know this guy is quite the guy, man he knows his stuff, we talked about sizing an design of a boiler and he was willing to let me in on his experience. Much learned in an hour and a half conversation...at the end of the conversation I'm still gonna do the boiler, with the 6100 gallon tank a 42"x 5 foot box and 2 dozen 2" pipes 16 foot long... So I'm figured out the Load of the buildings(with help from the man), my 6100 gallon should hold about 4 million btu's and the smaller something like 2.7 million...anyways I've got a question, this will work for winter months but the hard part about missouri is the summer.....so here is the question....I'm thinking of running air conditioner A coils in the plenum of the furnace for my heat exchanger, with a little reworking the small ends of the A coil the return of refrigerant lines, could be retrofitted with a manifold, the manifold going into the A coil is big enough, but the return too small, so a little retrofitting would be needed.....the A coil already has a water pan underneath it so it would gather condensation....So it would be dual purpose, cold water from the ground in the summer.....boiler water in the winter.. I tried today with a circulating pump a garbage can full of water and ice to try and do a mock up of a geothermal loop....but no dice, I've got some Ideas for increasing the cooling, but I will try all this tomorrow.....Has anyone ever done this or am I crazy....ha maybe you shouldn't answer that....you guys are awesome
bryan
also what size piping would you run to the buildings? I was thinking inch...

oh and I agree.....get the kids to do physical work........too much tv and video games these days.... congrats kid you will be playin the game of cut down this tree.....and haul it to the boiler........