Yes ofcourse it can rise up to $800 this year. My predictions may be a little low compared to other, but I would be pretty satisfied with a rise up to $800-1200 this year.
I am sure this will happen around halving, and not months after halving. Why? Simply because it's around halving everyone want to jump on the train. No one awnts to jump on the train when it have passed many stations.
Lets just hope we see the moon for bitcoin price soon.
I don't think $800 can be achieved in this year, as price rise is slow, its taking too long even to reach $500 so I think we need to wait long to see that price.