Will you cast a eye over my first bash recipe please!

Is it true to say, CRS as normal but no gypsum??
Lager Malt 2.5 EBC 11 lbs. 3.9 oz 5100 grams 91.1%
Munich Malt 20 EBC 1 lbs. 1.6 oz 500 grams 8.9%
Hop Variety Type Alpha Time lb: oz grams Ratio
Hallertauer Hersbrucker Whole 2.9 % 70 mins 0 lbs. 3.5 oz 100 grams 71.4%
Challenger Whole 5.5 % 70 mins 0 lbs. 0.4 oz 10 grams 7.1%
Hallertauer Hersbrucker Whole 2.9 % 15 mins 0 lbs. 1.1 oz 30 grams 21.4%
Saflager S23
Final Volume: 27 Litres
Original Gravity: 1.050
Final Gravity: 1.011
Alcohol Content: 5% ABV
Total Liquor: 38.3 Litres
Mash Liquor: 14 Litres
Mash Efficiency: 80 %
Bitterness: 34.3097536791778 EBU
Colour: 7 EBC