Hi Cliftonian, sorry you are here. We have lots in common my friend (and a few bits less so) although I realise from this great forum that no two cases are the same.
I am 49, diagnosed 6/11/16 psa342, Gleason 9, T4 N1M1a, I am lucky that I don't have bone mets but have lymph spread. Like u, on zoladex PSA down to 65. I am someone who has always planned everything in life and given it my all, like you I now have an inability to plan for example next years summer holiday ( I would usually have booked in November). Uncertainty rules ok.
I am starting 18 weeks of chemo in 12 days, very scared as unknown however telling myself that by staying fit and a sensible diet I may be in more control of side affects, I perhaps nievely think I will run a marathon in April!
So what am I saying? I can't tell you what is right but you are not alone in being here. Plan/ influence what you can and focus on that, ignore what you can't.
There is more than a flame of hope as like you I have few side effects so you don't need hope to enjoy today and tomorrow or the day after. Plan those and do what you want to ( I have found myself becoming more philanthropic, more tolerant of peoples failings but less tolerant of wasting time). As for 2015, my destiny may have me being knocked down by a car at any time and I never worried about that before so I am not going to worry about something that should be many years away. I hope my ramblings will help you work out what you need to, you have many friends you don't realise all here to talk to. Hope all goes well for 2015. Kev