As far as the staking goes they are full of it guys. I had .107 and it staked today. I got like .002 for it. Everybody should stake if I did. I used the .config the dev posted and no port forwarding with 20 connections to server.
Everybody will after 30 days max of HODLing on to each transaction of received coins. =)
But yes, you can definetely stake with under 0.3 even tho the more coins you have the faster you will stake.
If you turn on coin control in the wallet settings, you can see the priority of each transaction...it will increase over time / also depends on coin amount.