My husband was over weight when we met. He has since gained an extra me in weight but I've gained a small child. I too focus my eyes on individual body parts and his face but my hands go where ever I feel like. It really depends on the person if weight is an issue to a sexual relationship. I know my husband has lost potential relationships due to his weight. We are both very visual and controlling so hiding under sheets are not an option in our relationship.

It sounds like the risks out way the benefits to this short term relationship change. It could work but do you have an other options that don't have as high risks.