Prefer a call Have existing steel steps Want wooden steps to placed on them and add 1 railing

We want to do this on a budget, so we want to use the existing wooden stairs and have a balustrade inserted as well as railings on both sides and the wooden stairs filled in. My husband wants the steps to be carpeted, but we are still discussing it. I would like glass or Perspex, and he might be thinking steel or something similar, but it needs to be safe and childproof, in other words, a 4 and 7 year old boy shouldn't be able to fit their head through the balustrade. Thanks.

The rail will only be on one side as the other side is a high wall.. I prefer a combination of glass and metal.

14 wooden steps in total in an L-shape where the landing is. Each step should be approximately 75cm by 25cm with 12cm height inbetween. First 4 steps then The landing (should be approximately 75cm by 90cm) then the other 10 stairs

need to lift staircase and re attach to wall.. the stair case has sagged from original position.

wooden staircase attached to the wall has shifted and would like for it to be fixed.