Hey LB,
Not sure if you are worried about the financial part or the part about perhaps not telling your spouse. Maybe both. I think you know how much you make and are willing to spend. Taking into account maybe you'll want to take a vacation, what if things break down? As far as telling your spouse, be realistic. Would you leave a known thief friend in your house while you run to the store real quick? Would you let a child abuser babysit your kid? Greedy friend of yours watch your cinnamon roll while you go to the bathroom? Let your, perhaps not working and horrible with money, wife pick your home and/or know about how much your bank approved you for?????
Bruh, c'mon, you already know the answer. Don't doubt yourself.