1- the VA is not your only option
2- would BoA make a home loan at the same time as the business loan
3- sounds like your residential property might even make a great SFR/business joint venture if it's zoned for both uses...no sense walking across the street when you can just walk through a door from your 'bedroom' to the office
4- most LO's, RE's, etc will tell you to keep your purchases to a minimum while trying to close on a house...especially credit card purchases. anything that disrupts your debt-income ratio raises a flag. taking out a business loan....