Front yard landscaping—the deck

To refer back to the plan/layout and before photos, click here.

Improving the deck is a pretty major element in improving our curb appeal, not to mention our safety. Our current deck has given many a sliver, and the railing consists of weather-warped and wobbly 2 x 4s that would do nothing to contain a child. We added some hog wire for safety, but it isn't pretty. 

From the beginning I have envisioned a cable railing. Preserving the view is paramount so I don't want anything with heavy stiles. Here is my inspiration:

Sources: Clockwise from top left: 1. Houzz; obviously we would need more cable than this for safety, but the idea is that you can see through it! 2. Houzz  3. eBay  4. n fiore on flikr  5. Czuba Steel Works  6. Houzz

My preference is to have metal posts, but I don't mind a little wood either. Our basement railing turned out great, but I think my dad hopes to DIY this one to save some money. We are probably going to use composite material for the decking, but I'm open to using redwood. What are your thoughts?