Chines, rates have gone up about 0.5% in the last two weeks...rates are probably going to continue to rise (due to inflation). Your qualified based off of what the proposed mortgage payment will be. Since rates are rising, you may want to check w/your LO to see if you're still approved...especially considering the high ltv. We also had several guideline changes with MI and conforming guidelines that went into effect on June 1...since you're approval was 2 weeks ago, I do think a phone call to your LO may be worth your time considering all that is happening in the industry currently.
Good luck!