Lower mash temps as Voss prefers smallers sugars
Based on boiling 29.00 gallonsliters at 1.050 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.052. You were planning on an OG of 1.052 so you are right on track. Nice job!
Needed more hops as per original recipe because yeast wasn't underpitched for additional citrus esters