Network hash reach > 700GH/s in explorer and 1.4TH/s in lpool.name. Congratulation!
About master node amount, I think 50k SWIPP is a large amount and everyone will not willing to buy if the price high.
Just imagine if SWIPP price is $1/coin, everyone will be afraid to pay $50,000 for 1 MN.
So I think 20,000 SWIPP or 10,000 SWIPP/MN will better and more people will willing to buy, and then the price will up quickly.