My humble opinion is you don't do it.
First of all if you don't if your epifhysial plates are closed you may still grow a bit that will make all the difference. You can even check if you can still have Growth Hormone injections (likely not effective in your age, tough).
Option 5 is surely the more risky, unknown, procedure, you lose not only that money, specially if you are not able to do phase 2 but lose also precious time that you can spend on investing in other important issues for yourself and that also count to attract women: personal education and career choosing, interperspnal and couple comunication skills, style, languages, travelling and aquiring experience, counselling or coaching, etc.
Furthermore, most searched after men's height in dating websites in the UK is 173cm (5,8" - this is not an average, it's the height that is searched more often) and average men height there is around 176cm (yes, it may seem strange but it's from credible sources).
Just...don't do it man!
Or at least wait until cool down your head, maybe at least until being 20 and check you really don't have height neurosis and that you maybe have the opinion there are better options or even there's no need for LL (who knows, you may have for example a girlfriend that gives you the confidence boost you need or want!).
Save your health, physical performance, time and precious money!
Option 5 is just not "safety first".