Give the scouts vet sarges with teleport homers, it increases your infiltrating strategic capability ensuring teleport precision.
Drop 1
dev marine, heavy flamers from dreads and combi-flamer (really, what's the point?) to pay for the 40 points needed. If you love the flamers so much, drop the chainfists to keep one or two.
Also, tank-hunters might be more useful. Those
ML's can only do so much.
25 marines and low
AV vehicles are a challenge for objective missions. Good luck!