I love both of your 'houses.' They look well built and extremely functional. I have 3x8 18" raised beds and put pvc poles arched over them to cover with poly in the spring. The poly lasted three years. This spring I will replace it and change the design a little. I did plant lettuce and brocs in the beds last week or so in hopes they would start growing as soon as the soil and sun allowed to get a jump on it. When I grow them in the garage 'greenhouse' they tend to be weak and spend too long there. I thought I had waited long enough last year to be able to put them out before they began to get straggly but no soap. Lettuce I managed to get out and then sowed more immediately so we had a nice crop all summer.