Legality depends alot on your state, city and county laws. For instance in California, it's illegal to posess non-native venomous reptiles with only a few exceptions, such as some rear fanged, and beaded lizards.
I'm not too sure if king cobras come in an albino morph. From what I gather, I could be wrong, but I believe it's rare enough to find a captive bred one that accepts unscented rodents instead of other snakes.
Things get pretty heated over the venomoid snake debate. So conceding all other points to others, I'll only recommend that due to the risk of botched surgery or regenerated glands, a venomoid snake must be treated no different than a hot one.
For links, I'd recommend scrolling through the venomous snake forum on here. It's in the General Topics H-V. I strongly recommend reading through much of the stuff there before making inquiries as to ward off 'hissy' answers.
Frankly, though they're magnificent creatures, the thought of an 18 ft snake, one of the most intelligent species of snakes and packing large amounts of neurotoxin (all in the same creature) scares the heck out of me. They're not creatures to be taken lightly and while I'm sorry for lecturing you, I feel ethically obligated to discourage you.
Have you considered a cribo? Intelligent, large, responsive non-venomous sight hunters. They don't hood, but they're basically the non-venomous equivalent of a cobra.
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0.2 chickens (Condor & Valentine)
0.2 dog mutts (half ownership, only mine when they misbehave, Lucy & Amy)
0.1 Halflinger horse (Crissy)
0.1 Normal phase California Kingsnake (Sophia)
1.1 parents
Still searching for 1.0 WC human