Just use BAM at 1600. Last night I boosted my spell factory and 2 barracks then loaded up all 6 barracks with BAM. I started the 45 minutes with 39,000 DE and I ended with 45,000. 6,000 DE profit in 45 minutes.
I did did it again this morning and ended up at 49,000. Not quite as good but still 4,000 DE profit in 45 minutes.
Of course this will go away once the boost ends but you still should be able to make 4-6k per hour after the boost is done.