If you progress linearly (which I assume you will because you should) you will stall quicker on 5x5 than on 3x5. That's fine, but if you have no idea what you're doing and you don't have someone who has quite a lot of detailed knowledge of you, your training and the program itself, every time you stall you lose time while you figure out what to do. For squats, which you're doing every workout I also don't think the justification of needing more volume than 3x5. 9 heavy sets a week plus a set of deadlifts is by no means low volume. Whatever you say about the program, lifters on Starting Strength don't usually lack relative leg development.
For upper body, I like the added volume, but again you run into the problem of stalling a lot more. In fact, unless you have microplates I doubt you will progress next bench workout on 5x5. Personally if I wanted a linear progression routine with more volume (which is what ICF 5x5 is) I would arrange it kind of like this
Workout A
Squat 3x5
Bench 3x5
CGBP 3x10
Row 5x5
Chins 3 sets
Skullcrushers
Workout B
Squat 3x5
Deadlift 1x5
Press 3x5
DB press 3x10
Row 5x5
Curls, abs if you feel the need. If you can do weighted chins and you feel you don't need curls to grow your arms then I think BW chins might work here
So I drop the volume on the main lifts which I think is necessary to avoid stalls and simplify the whole process. The lifts in bold are what you plan progress on, the other lifts just do them, work hard, and take the progress as it comes. I do think you can replace 3x5 with a ramped 5x5 which may offer a little more volume if you choose to do so, but I don't really like 5x5 sets across like ICF/SL recommend because I think you will either add weight too slowly or stall too quickly. It may be the case that doing this and stalling earlier is theoretically optimal providing you deal with it in the exactly correct way, but I don't think unsupervised novices will in practice.
I have removed hyperextensions from the routine because I don't really like them unless they're reverse hypers and I think between rows, squats and deadlifts your back is getting loads of work but that's neither here nor there. I would never be prescriptive in ab work and I never got anything out of cable crunches. I think 2x10 is fine but just do the exercise you like the best.
When you think about it, these kinds of routines are taking something very close to Starting Strength, which needs high amounts of food to maintain progress on, and adding volume (sometimes a lot). Something has to give. For someone squatting 70 kg and interested mostly in strength I don't think you should be adding 2.5 kg per workout, it should be way more, so that's one reason I don't like 5x5. The same somewhat applies for benching and pressing, but I can see why these routines add volume in these exercises.