Good for you with the GAL plans!! I'm sure getting out with your kayak and on your bike will be a lot of fun!
With the social stuff - there is a spectrum and I would think about that. At the most daunting end might be a pure social Meetup where you make conversation 'cold' with other participants. At the least daunting end might be a shared activity where social interaction is more incidental and you are also focusing on other things. I certainly feel more comfortable with the latter. I could manage the former but I would probably feel drained afterward.
So, maybe a kayaking group or something more along those lines...volunteering in a bookstore has been a good one for me and dancing and yoga, choir - all activities that bring me in contact with others and none 'pure social.' Food for thought anyway perhaps?
And whilst I think it can be useful to extend your comfort zone a little - GAL is supposed to help us feel better about ourselves and our lives....
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus