Posting after Dr. A feels a bit silly but here is my 2 cents. Nothing is guaranteed, obviously, but it’s important to remember the flat cm amount on its own means nothing. What does matter is what percentage of the original bone length you are lengthening by. For example if you are 5’1” and your femurs are 38 cm long, a 5cm increase is close to the recommended safe amount which is 15%. However for you, your femurs are likely close to 48cm (this may vary greatly, but speaking hypothetically based on the average for your height) you are lengthening 10% leaving 2.2 cm less than what is still considered generally safe. Lol this is the cruel irony of Limb Lengthening, the taller you are, the safer it is…
From what I hear people experience subjectively is that 5cm is the turning point where things become exponentially more difficult every mm past that.
I can’t speak for sure but I think you might be disappointed with the results of 5cm. In the U.S. at least, you are still kinda in the “mediocre” height range where it’s not really positive or negative, you are just an average joe, 5cm will take you from the bottom of the average joe range to the top. I think the next tier of height is 5’11-6’0, the “ kinda tall” range aka a respectable male height. This is the point where your height goes from neutral to positive in the way people see you.
If you are 5’8 and some change, you can get to 5’11 with 7cm. At this height you are as tall as almost every guy who claims 6 foot, you might even be taller than a lot of “6 footers”. I promise 95% of men (in the US) that claim 6 foot are 5’10- 5’11. And every guy who is actually 6 foot claims 6’1-6’2 because they don’t want to be perceived as one of the 5’10-5’11 guys lol. Anyways that’s a random tangent but I wanted to say that if you get to that 5’11 height or close to it, you are 6 ft in basically everyone’s eyes.