You can set this tank up in an hour or less and have it fish-ready. Grab your saw and drill! Come see me on Facebook for lots of great info and bait entertainment.
100 x 6 inch gizzard shad shouldn't be a problem in 70 degree water. 1/2 oz per gallon of salt. Use Shad Crack from Striper Soup when you catch your bait, it helps condition and calm them.