Oh BOAB mate, I really do have some reservations about this stuff, I echo what Becs says- bad, bad news...
I think if you find that the SSRI's aren't working for you I understand the need to come off them. This will take a bit of time and it seems like you're stacking it all up together and not giving yourself room to do it. Ie too many goals together. Basically, if you're riding it will produce endorphins and serotonin, (as well as others such as dopamine and GABA) however if you're depleted already or as an effect of the medication the uptake of Serotonin is inhibited to allow more to float around in your system. Wait for this to clear up first as you may be using up more of your current stores of Serotonin or what not (as they are associated). The grenade is not going to address the issue and to be frank may well worsen the case with fatigue..you're messing around with your body, the different energy uses etc are not at their normal capcity right now. Seriously,. give yourself time, at 6 months you will be able to ride the amount you want until then take it easy on yourself.
Trust me I am speaking from experience of being exhausted and fatigued - I was in bed for three weeks straight - it feels like it's never going to get better but that is just the mind telling you things that keeps you negatie. In the scheme of things you need to do what you need to do but a period of a few months might be what you need to rebalance yourself..all the best with it mate, it's not easy.