Watching the market begins to increase while bitcoin bullrun commenced, made my wide imagination spread for different thoughts. Above $300 was only the starting price which eventually burst someday if bullrun continues to be initiated. We only hope for more incoming demands in order to see a price that go beyond $300, and that would be more productive if we have to experience $1k bnb in the future.
The real target is 1k, when this correction finishes we will see that number, possibly in a couple of months.
Don't be too hopeful about March but after that we will see another bull run.
After this correction, there will certainly be further price increases not only of BNB but the entire cryptocurrency market.
Regarding the maximum ATH for BNB, I wouldn't be as optimistic as you are, but I think $700 can be achieved.