You can build your own spectrometer following directions from
Public Lab. Their goal is to develop open-source tools for citizen science.
1,012 karma · joined March 17, 2013
http://www.sethgodin.com/sg/docs/bootstrap.pdf
If you haven't gotten into an incubator, you should think about bootstrapping as long as you can until you find your product market fit. If you burn investor's money before you find a fire that can grow, you will be forced to quit.
Although I think quantum encryption will become common place before someone builds quantum computer with enough qubits to factor large numbers.
I haven't had any problem with not having a DVD drive. I did buy a Thunderbolt Gigabit Ethernet adapter though.
I am happy with my purchase, but it really hurt the wallet.