I was able to finish my heroes before the next game. Both of them converted - Knight Azyros from prosecutor and Lord Relictor from liberator. I tried to make them both as similar as possible, so very simple conversions, nothing fancy. I also painted one Paladin Retributor - I have 8 points spare from last minor victory and I am not sure, should I get Paladin now, or collect renown and then take Relictor for 16 points.
I must say Stormcast are surprisingly interesting to paint - simple, but with many possibilities to make it more challenging.