Cable with composite gives a traditional style in the rails and sleeves, but the cable gives it a twist, and becomes something totally unique.
The first thing to do is make a 2d drawing of your deck. Make sure to label the sides of the deck, account for any angles, and measure the total distance of your stairs; from the front of the top stair tread to the front of the bottom or last stair tread step.
Now that we have a drawing of the deck, we can find where the posts should be placed. Draw a square for each post at corners, edges, and top and bottom of stairs. Then add any posts between those posts for any sections larger than 8'. Rail Kits are available in 6’ and 8’ Level and Stair, so a section that is 7’ will require an 8’ Rail Kit which will need to be cut in the field before installing. In contrast, the stair sections which are 9.5” total length will require two 6’ Stair Rail Kits on each side and 44” posts between. Now, label the distances between all posts with a 6'L (6'Level), 8'L, 6'S, or 8'S (8' Stair) (multiple "short sections" under 4', can be achieved by using one longer section (8' or 6') and (a) "Cut Kit(s)" which are 4/Pack rail brackets available in level, stair, or level angle adjustable ADJ for 45 degree and other degree angle turns.