Need help planning

[Clownrock95]

hello all i have a basic idea of what i want but i figured i could run my plan by some people that knew what they were doing

my plan is as follows

-(x1) crescendo bc2000d

-(x1) hybryid sundown zv4 15

-(x1) crescendo c1100.4

-(x4) undicided 6.5" for the doors

-(x1) 240a mechman alt

-shca1/0 and 2/0 wire

-(x2) undecided batterys (xs power most likely)

the things im not sure about

-between the 2 crescendos i figured 3k watts at 13.8 is 217 amps of draw will a single 240 (or 270 mechmans website says the 270 is available but i cant find it) amp alt be able to handle that plus my trucks normal functions?

-will the sundown drasticaly overpower the 6.5" doors

-will 1 run of shca 2/0 be enough (i dont think it is) should i do 2 1/0 runs instead?

i already have the sundown so unless i sell it thats the only concrete part of the plan

any helpfull input is appreciated