Lurker for a while, desperately need some advice...

I've recently been recommended to take accutane for my adult acne and excessively oily skin. I've never taken it (how I wish I had done when I first started getting acne, but it was apparently not 'bad' enough for accurane. I was always relatively clear other than the odd pimple - which I had a bad habit of picking. 

Anyway throughout university I started to scar. Coupled with poor habits (smoking, bad diet etc) my skin was getting worse and worse, but still 'manageable'. After I graduated I then was given poor advice to try dermapen- I did 7 sessions of this over 2 years because the temporary swelling fooled me into thinking it was improvement (from my research I now know this was never what I needed doing as my scars are rolling and quite severe). 

Anyway, I've now been left with excessively thin skin and widespread scarring. I'm olive skin toned but now burn under the slightest of sun, even if reapplying SPF 50 regularly. 

I went to a derm (Dr Injibar) who recommended I do subcision (NOKOR) followed by a course of accutane. My question is, given that tane is known to thin the skin and delay wound healing, is it just too late for me to take it? Attached pictures of my thin, damaged skin. Please help. Any advice / treatment plans welcome, I'm really at a dead end