I agree that you do not need half that stuff and Robinsons is very good.
Metal curry to clean your body brush.
Dandy brush
Hoof pick
Sponge (bought from any shop)
Sweat scraper if you are going to be working your pony very hard or bathing him a lot. (A piece of bailer twine works very well)
Now I will tell you something that not many will know about. It is a brilliant addition to your grooming kit especially with winter and mud coming!
Buy a packet of three stainless steel pot scourers, the round shiny ball ones. Unravel them and then plait them together so they form a sort of pad. This is the best thing ever for removing mud. The horses do not mind it at all (even my clipped out, very fit TBs do not object to it on their ticklish bits)
Instead of a mane comb get a dog comb with a handle, it is better for pulling manes.
You do not use a plastic curry or mud buster (whatever that is) with the wire pad, nor do you need a face brush, your ordinary brushes are fine.
The only thing I can think that you have missed is a water brush for dampening mane and tail.
The other thing for a final shine is a stable rubber but, any piece of cloth will do for that.
A cheap hair brush does well for tails.
