I ordered 2x 13.5TH/s S9s from Bitmain for less than I previously sold the single 11TH/s unit for. I'm going to sell the remaining 11TH/s S9 to complete the upgrade. My goal is to end up with 0.5 BTC and 5TH/s more than we started with.
I was able to sell the other S9. This means our hashrate will be low for the next month or so as we are down to only a single R4, but we came out ahead 0.55 BTC in the sale and will have an additional 5TH/s as a result. Luckily, p2pool hit a block this morning, so we may not end up missing out on much in the way of mining rewards either. Our L3+ miner is also not far off and I've begun accepting orders for the 10oz gold / 250 seat Minted Seat coins, which may help provide donations in the meantime.