GO FOR IT STEVE. You'll wonder why you didn't do it sooner. Outside storage of HFCS or liquid sucrose is very common on the Canadian Prairies. I know of everything from 150 to 7000 imperial gallon tanks. It just depends what your needs are. Our own tank holds 5600 imp.gal and can be used for honey & syrup. It was made by a company that makes hopper bottom grain bins. Others use liquid fertilizer tanks/ polytanks, etc. Freezing is not the problem here, so it shouldn't be there. We send you your weather. We've had syrup in the tank (and barrels for that matter) at 50 below. No bursting or torquing. Sugaring is more a problem and can be solved by circulating the contents in late fall or early spring. We have a 3/4 line spaced 6" o/c in the cone, but this is more for the honey. The line uses hot water and it must be blown out before freeze up. 2" & 3" water pumps with gas engines are commonly used. Many have one attached to the tank on the truck. It can be easily plumped to mix or pump on or off. You can get suction hose from 1" to 3" in diameter. Polypropylene camlock fittings are cheap and allow for quick changes in new situations or cleaning. For pumping off into inside feeders or pails in the yard, use 1" rad hose or 1" fuel hose which can be easily coiled or reeled up. Agriculture stores will have all this stuff. Farmers use them for livestock and chemical application. A friend has almost what you describe for syrup only. He uses two 1250 imp. gal poly tanks. These are round (about 8' dia) with a 2" outlet at the bottom edge and a manhole on top at the side. They are overall about 6' high. Up here there seems to be a 100 different manufacturers. They run about 500. C$ at agriculture outlets. He has them beside his building with a small roof overhead to shelter them from the summer sun and the winter snow sliding off the shop roof. The tanks sit on a slight grade towards the outlets which face each other. A 2" line runs down between them and each tank is tied in with a valve. One end of the line extends out to the road and the other goes into his shop. He can mix inside or pump directly onto his truck tank. He has room to add more tanks as needed. Kitec line (pipe used in underslab heating) is coiled in the bottom of each tank. This pipe has a metal layer and thus holds its spacing by itself on the floor of the tank (Again this must be blown out before freeze up). Circulating hot water makes for easier pumping in late fall and early spring. Hope this helps Dave Ardmore, AB.