It's hard to say at this point, scoring goals at U18 level really isn't much of a gauge of anything, but obviously his performance last night is something to take notice of. Barnet might be non-league but they still are infinitely more difficult to play against than other acadmey sides.
In terms of style, he really is similar to Nketiah. An old school Number 9. This season is the one to watch because he'll lead the line for the U23s. If he can cut it against bigger, stronger players, sometimes experienced pros even drop down, and still bang 20 or 30 goals in then we're talking. Let's see.