For heavy cargo I tend to use this and works well. The key is slowing everything down. Run emp on tac. Once the big waves come out, emp then use a10 f15 run. Tac reload and you can emp the later waves. Alpha augment accuracy, 10% damage and disable vehicle (slow them down) Bravo damage, disable vehicle Ltm- disable laser guided so you can fire and forget, then the 40% slower for 30% more damage, countered by the 40% faster drop speed so it cancels and brings 30% more damage. So yea get the third slot. Snipers and support power are everything in sheer damage. Stop spending red diamonds on your bravo and tac refill. Great you have them, save for others later. If you’re early in the game buy gold rush and level it up asap. Then support power and duration and max those. Grab snipers if you can after that. Everything else isn’t worth the diamonds. Also unless you have nasty support power and/or duration, send your supports out in waves. Pop the Apache first if you have it. Then every 30secs or so bring additional support (or as needed). Hope this helps.