Filled two 1.75 gallon kegs and two 12 oz bottles primed with 2 grams sucrose.
Based on boiling 5.00 gallonsliters at 1.039 for 50 minutes, this will decrease your wort by 0.83 gallonsliters, bringing your after boil OG to 1.045. You wanted an OG of 1.048. It looks like it will be under.