Theres lots of advice about raw on here if you do a search

i'd have a good read up as you want to make sure your giving enough types of meat/offal/bone.
The chub meat you are buying at the moment is mostly moisture:
Composition: Meat and animal derivatives, Derivatives of vegetable origin, Minerals, Herbs (min 0.1% Basil).
Analytical Constituents: Crude Protein 6.5%, Crude Fibre 0.5%, Fat Content 5%, Crude Ash 3.5%, Moisture 83%.
Additives: Antioxidants; Preservatives; Flavour; Colour.
Food is a personal preference but I would change to a better quality food as he still has alot of growing to do, you won't have to spend a fortune on it.
So you have something to compare, the ingredients in the dry food mine have are here, its quite pricey tho as its 80% meat but they seem to be doing well on it so i'm happy:
GUARANTEED ANALYSIS
Crude protein (min.) 38.0 %
Crude fat (min.) 17.0 %
Crude fiber (max.) 3.0 %
Moisture (max.) 10.0 %
Calcium (min./max.) 1.4 % / 1.6 %
Phosphorus (min./max.) 1.2 % / 1.4 %
Omega-6 (min.) 3.0 %
Omega-3 (min.) 1.1 %
DHA (min.) 0.6 %
EPA (min.) 0.3 %
AA (min.) 0.16 %
Carbohydrate (max.) 25%
Ash (max.) 7.5%
Taurine (min.) 0.35 %
Glucosamine (min.) 1400 mg/kg
Chondroitin (min.) 1000 mg/kg
Microorganisms (min.) 120M cfu/kg
pH 5.5
BOTANICAL INCLUSIONS
Chicory root 700 mg/kg
Licorice root 500 mg/kg
Angelica root 350 mg/kg
Fenugreek 350 mg/kg
Marigold flowers 350 mg/kg
Sweet fennel 350 mg/kg
Peppermint leaf 300 mg/kg
Chamomile flowers 300 mg/kg
Dandelion root 150 mg/kg
Summer savory 150 mg/kg
VITAMINS
Vitamin A 15 kIU/kg
Vitamin D3 2 kIU/kg
Vitamin E 400 IU/kg
Vitamin B1 0.9 mg/kg
Vitamin B12 0.5 mg/kg
Thiamine 50mg/kg
Riboflavin 45 mg/kg
Niacin 450 mg/kg
Pan. Acid (B5) 50 mg/kg
Pyridoxine (B6) 38 mg/kg
Biotin 1 mg/kg
Folic Acid 5.2 mg/kg
Choline 2700 mg/kg
Ascorbic Acid 55 mg/kg
Beta Carotene 0.44 mg/kg
AMINO ACIDS
Taurine 0.3%
Lysine 2.45%
Tryptophan 0.38%
Threonine 1.5%
Tyrosine 0.98%
Methionine 0.8%
Isoleucine 1.5%
Leucine 2.9%
Valine 1.85%
Arginine 2.2%
Phenylalanine 1.6%
Histidine 0.8%
Cystine 0.35%
Glutamic Acid
MINERALS
Sodium 0.4%
Chloride 0.64%
Potassium 0.77%
Magnesium 0.1%
Sulphur 0.4%
Manganese 27 mg/kg
Cobalt 0.47 mg/kg
Selenium 0.9 mg/kg
Iron 240 mg/kg
Zinc 200 mg/kg
Copper 26 mg/kg
Iodine 0.18 mg/kg