Slow and sure is the best way to go. I don't think you need to sell all of your liquid POB now. Everything is moving great at the moment. You definitely could start slowly selling to get development moving forward, but I am really appreciating the price action due to massive staking. That said, I think it would be best if you just started selling slow with the market (as there could be a lot more up yet) and we wouldn't want to sell too cheap.
Development will be crucial moving forward, but I don't think it needs to happen now. Whenever there are funds for it through either POB sales or pob-fund maturing. Everything works right now, but to be taken seriously, some upgrades would be good. No need to rush.