It sounds like you need help more on the order fulfillment side than anything else. A lot of Facebook groups do concentrate on local buy / sell  so you could sell to people who can come and pick up, if you're comfortanle with that and it's a safe option for you. 

I'd consider perhaps looking for someone you can wholesale them to, this way instead of trying to organise and post multiple small sales on a continual basis, you'd only need to organise one large sale every so often.