Post planning / Be a tomato supporter

For supporting the many plants, I am planning on buying 8 ft. 2x2 poles which I can get reasonably cheap at Home Depot, then using twine to do the Florida weave thing.   5 rows: 25 ft; poles each 4ft =5 x 6 = 30 poles;  figure 5 rows x 25 ft x 2 times across each row & back again x say, 6 levels of twine = 1,500 feet of twine.  Whoa.