Nothing is going to make that bike fit decently. I'm more concerned about the cantilever effect of that long a post plus a seat mounted too far back. Nobody is going to be able to tell you the value of your bike except someone who buys it, but certainly if it needs several adjustments it's not worth a lot. On the other hand the cost of a different bike is only its cost minus what you can get for that one. I'd consider looking for a good used bike. A co-op or community bike shop might be a good source for such an item as well. You could just cut off the bent part of the seat post to make is useable for someone else.