Well, it mostly depends at your legs. I don't know your current height, but getting your sitting height 86 and considering the ratio SH/LL as 1.05 in adults (reference:
https://adc.bmj.com/content/90/8/807). You get 86x0,95=81,7 .'. 81,7+86=167,7cm. So you're around ~167,5cm-168,5cm (5'6"). In order to achieve 177-178cm (5'10") you would need quadrilateral lenghening, which would need 2 surgeries and lenghening both femur and tibia by ~5cm each (total ~10cm). Knowing this you could search for different options, but I would recommend doing 4,5cm tibia than one year later 5,5cm femur. You can try simulteneous quadrilateral lenghening 5cm in each segment (3 weeks apart) but I don't recomend this so much. In order to achieve 180cm (5'10") you would need ~11,5-12,5cm .'. I would suggest doing tibia 4cm and one year later doing 7-8cm femur.
Keep in mind that no one can set your goal, only yourself. Your goal height needs to be discussed with a doctor, but it mainly depends at your condition, health and body (flexibility and proportion). Don't get too worried about proportions, there are plenty off weird tall guys as so short guys. You can't achieve more than 8cm with one single segment. If you worry about health conditions, rehab and recovery, read some diaries and email doctors. Also, if you want to know how you would look with 5'10"-5'11" try doing mock ups, you can do them in many different ways.
What I suggest is that you start svbing money and streaching your whole body everyday from now on.
(knowing you're new here, search for the different types of CLL as: LON, Precise, Stryde, Fitbone, etc) -> (I would do stryde, knowing it tolerates weight bearing and it's internal)
Hope that helped, good luck mate!