Meal Plan:

**Breakfast (912 Calories ~29% of daily total):**
- Beef (Lean Ground 90%) - Portion size: 230g (Calories: 590).
- Cashews (Raw) - Portion size: 50g (Calories: 276).
- Flax Seeds (Whole, raw) - Portion size: 26g (Calories: 138).

**Lunch (252 Calories ~8% of daily total):**
- Prawn Biryani (Homemade) - Portion size: 360g (Calories: 252).

**Dinner (126 Calories ~4% of daily total):**
- Chicken Mac (ready-to-eat) - Portion size: 150g (Calories: 126).

**Snacks and Extras:**
- Foods as needed to meet the remaining calorie and nutrient targets. 

**Grand Total:**
3145 Calories: Composed of approximately 55% carbohydrates, 25% protein, and 20% fat.

Please purchase the following groceries for the week:

- Beef (Lean Ground 90%): 1.61 kg
- Cashews (Raw): 350g
- Flax Seeds (Whole, raw): 182g
- Prawn Biryani (Homemade): 2.52 kg
- Chicken Mac (ready-to-eat): 1.05 kg

Please note that additional items will be required to meet the remaining calorie and nutrient targets. This may include fruits, vegetables, whole grains, and protein supplements. This can be tailored to your personal preferences and dietary needs. 

Please also note that this plan is merely a framework. Adjust as needed and make sure to consult with a medical professional if you have any specific health concerns or questions.