My marathon nutrition plan

OK marathon nutrition plan.....

GU at 00:30, 1:00, 1:30, 2:00, 2:30, 3:00 total carbs 150 grams/800 calories

Sport Beans, 2 packs taken between Gels , total carbs 50 grams/200 calories

1st hour Gator Aid switching to Water , total carbs 35 grams/ 130 calories

Hydration plan, 1L Gator Aid 1st 1 - 1.5 hour , 2-3L of water the rest of the race.

Protein.... need 45 grams will get it from ?