Advice needed re decking. Wanting to place 3m x 2m decking in front of Garden Shed. What is best sustainably, budget, effective and of course easy to either dyi or someone else to do. About to have installed a 3x3x2.1m (Internal 10sqm) Garden Shed on a concrete base with a sliding glass door facing into the yard and windows at each end (facing rear and front yard). Easy part someone else is doing. This will be an outdoor room for meditation/yoga/book nook