1 ) Keep both BK and AQ at same level, so upgrade AQ, BK, AQ etc.
2 ) Step upgrade AQ+5 to 15, BK+5 to 15, then AQ+5 etc...
3 ) Focus on one first, i.e. work on AQ to 30 whilst BK maintain at 10, then push BK to 30?
Which one out of the above options is better??
