Cash is King but cash will not grown. 100K cash is still 100K for the next few years.
Let say one of my neighbor. They are on H1 also. They drop for the new house like you did in July 2003, move in Oct 2003 with 390K house. 2 weeks ago. They put their house on market with a bit lower than regular price due to moving (price: 570K) and got sold in 3 days with 600K.
Let see how they made: 80K drop and closing cost in 2003 becomes 290K today ( minus the cost of 2% plus 5K = 17K for selling). They got 273K today.
What do you see ? You can sell your house very fast if puting the price a bit lower than the market. However, you will get the bid price much higher than your current price
Yes, it is risky if you lose the job right after getting the house, but it is not so bad also.
The same story on my neighborhood. For 1 house, first guy comes in the first pharse and books for 400K (this is a big house, around July 2003). After few months before completion, he is affraid to lose his job (like you) and drop out. The second one come in with the price 460K on Feb 2004 ( builder loves this since they got 60K more because of the first guy drop out). The takeover guy put the house into market right after the whole neigborhood complete on 04/2004 and got it sold for 540K. So, he made 80K in less than 1 month of owning the house. Minutes all stuffs and tax, he made at least 40K in a month. What is an investment ? He is on H1B also, but he did drop 2 different houses. That is why he sold this one right after closing.