Hey Ross,

Sorry for the delayed response.

1) the only 5ltrs in stock is 50Cal Combat and Ambush. Combat is best suited to weekly washing and Ambush for when you don't get to do it too often; say during the winter and it gets pretty bad.

2) Wheel cleaners generally don't have de-tarring ability, but Bilt Hamber Auto Wheel I'd excellent as it contains fallout remover / de-iron in it. Not as concentrated as a dedicated fallout remover but as you'd be using it regularly as your wheel cleaner, it keeps them in tip top shape.

3) As for the Air Freshener...personal preference really; most of the CGS ones we stock are good; and smell as they say they are
50Cal Tropical is a favourite of mine as it smells like Lilt but perhaps not overall long lasting.

4) Recommendat ion? Well again, hard to say. YouTube CarPro HydrO2 or CarPro Reload; very easy products to use and do a very good job on improving appearance. Another would be 50Cal Cover Up filer glaze; if you paintwork isn't quite perfect, its a temporary solution to perfect looking paintwork.
For interior, 50Cal Precision is a nice trim dressing, anti static to help prevent settling on the dash, etc, and smells of bubblegum; which might cover #3...but again the smell won't last overly long.