Finding "excellent" people to work for any start-up is very hard. You already know the C# is going to make it harder to find risk tolerant folks. People workin

Finding "excellent" people to work for any start-up is very hard. You already know the C# is going to make it harder to find risk tolerant folks. People working on Scala are most likely doing it because they WANT to, and would want to do it at a start-up. The acquisition question is business pre-optimization and any large acquirer probably won't care. Just build your prototype and get it out the door, don't worry too much about the details.