I need to replace my 40+ year old 10x12 metal garden shed and would like to go with another basic 10x12 metal shed but this time have a wood-free floor. Concrete seems the best solution.
I don't want to spend $2k having a slab poured for erecting a $500 shed. Can I pour a slab myself, without hiring a concrete truck? Looks like about 45 cu ft of concrete, which comes out to 100 60 lbs bags of quickcrete.

That seems tough without a mixer and even with a mixer rental, 100 bags of quickcrete are $300 and this sounds like a lot of labor doing it piece mail. Any help on how to do this on a budget?
There are metal floor frame kits but they still require wood floor boards. Are those prone to termite damage? Can these floor boards easily be changed? This shed is at a house that I will rent out in the future, so it should be both inexpensive but also last 20-30 years without major service.
G