Fantastic post!!! I feel we have a lot of common OP! I am a graduate and to be honest I don't think I could have done it without smoking. I also went thought a period where I thought I would best quit as after uni I moved hundreds of miles away with my GF.
Vaping was the answer for me, use so much less and do, so much more with my evenings and weekends. I could never go back to smoking. I work in a graduate level position and find it helps massively with my stress. I quit for 3 months and life was literally so difficult all the time. It made me realise I will always vape as quit smoking cig, smoking weed and both were a breeze compared to not using weed anymore.
To be honest, while I love visiting all my old mates and have a blaze with them, and love vaping on my own and having it as my secret, haven't told a single person where I live about weed and quite like it that way.