If I had 50k of extra capital right now, I wouldn't purchase additional mining hardware. I would start trying to figure out where you think the bottom of btc is. Learn to trade on some level. No need to day trade. Dollar cost average in what you want to hold for the next few years. That's what I'm doing with my extra 15K. I also wouldn't be hell bent on selling in one year. Could be in for a disappointment, if this is loaned capital that you have to pay back in one year without interest.
I agree with this, now BTC my be in the bottum with trying to get bullish. It will make you get more profit and wait to buy the newer vesion of ASIC.
yes, I think it is more risky to buy ASIC than buy btc directly, you need to consider management fees etc