hey, dont worry .thats the easiest visa . the better idea would be u getting ur h1 stamp first n then ur wife. so that she can present the copy of ur h1 stamped passport. U need all that u mentioned above except the bank document. they just ask ur wife , about ur job, what do u do n stuffs and bout wer n wen u got married. make sure she carries the invitaion card n some wed pics. i never heard them sending people to ur house or keeping ur wifes document. good luck