Your plans seem expansive and maybe costly. Id spend just a bit more and get a proper professional plan done.

It really depends on the style of pool you are after. No.5 is a great look for a formal pool with full width steps leading in. This can be a stunning look when connected to an alresco or formal outdoor dining area, like this (by Natural Pools): Or even this one: The steps then become multi level seating for all ages. Children can sit on the top step, while adults can sit lower down and rest their elbows back on the higher step. This can be annoying, however, if you want to be swimming laps (short laps in a 9.0m pool) and would prefer to touch to the wall. Another detail to keep in mind is the exposed points on your steps. For a tiled pool, these can be quite sharp and a higher potential for scraped feet or legs. No. 4 has three exposed points, No.1 has one and No.5 does not have any. So if you didn't want the full width steps, I would go for No.1. It has a clean line of a continuous ledge across the pool and then the one step below that for access. All the best with your project!

Could you divide the entire width, not length, just width between deck and pavers into three equal wide steps that have the same structure as the deck?

Thanks for your comments. We don't have a drawn plan at this stage. The block is 2000 sq m (20m wide x 100m deep), configured with N to the street. We want to allow a 4m driveway on E and 1m offset on W fence to neighbour, so max house width is 15m. Because of the depth we can locate house a fair way into block and leave a courtyard area behind a wall. The idea is to have 20-30m between front N wall and street border as a productive garden getting full N sun. Then an L-shaped house extending from NW corner of one room width down to full width kitchen, dining, lounge and main BR running W-E. The pool would extend down the N-S length of courtyard and be close to living/main BR with access from both and windows to the S to create x-ventillation.