Yeah I'd say that worrying about covid disrupting plans for a BG is not a big thing. And if you do do all the training and it gets delayed, so what, think how fit you'll be?

On the scale of things doing all the training and then get an injury or illness (just a normal illness not necessarily covid ) are just as likely disruptors, not to mention god awful weather on the day.

Are you sure you're not just looking for reasons not to try