I am buying my first horse soon. He is a 5 yr old Arabian gelding. I ride hunter under saddle, dressage, and jumping. I plan on only doing local competitions, nothing serious, in those disciplines, plus halter. Here is my list of supplies, am I missing anything, or is anything here not necessary?

the barn supplies alfalfa hay, given to all the horses 2x a day, stalls, turnouts, arenas, jumps, trails, lunge line, lunge whip, saddle racks, halter/bridle racks, tack room, cross ties, grain buckets, waterers, maintence, etc.

what i'll get:
Curry Comb
Hard brush
Soft body brush/face brush
Hoof pick w/ brush
Mane and tail brush
Mane and tail comb
Grooming tote
Nylon halter
Nylon lead rope
Snaffle bridle, with caveson and laced reins
cheap trail bridle w/ reins, caveson
D Ring snaffle bit, copper
Splint boots (for jumping, heavy exercise, trail riding)
Tail bag so he doesnt rub his off or get is messy/dirty
Zipped paddock boots
Suede half chaps
2 pairs of tan breeches
Certified helmet with attachable velvet cover
ratcatchers/hunt coat for competitions
hair nets for competitions
Medium twist snaffle bit for training
Leather breastplate for jumping/trails
english saddle cover
English all purpose saddle
Girth, irons, leathers
Quilted saddle pad for flat work
fleece saddle pad for jumping
mid weight stable blanket (no snow where i live, but rain in the winter)
fly mask
Training martingale
chain for lead rope (for competition, control)
bell boots (for trailering)
polos (for trailering, jumping, trails)
whip, for halter and dressage
mane, tail, body shampoo
mane and tail conditioner
shine/moisterizer for coat and face
hoof dressing
sponge with curry for baths
rag for drying/baths
sweat scrapper
clippers
braiding rubber bands
fly spray
first aid kit (thermomater, bandages, ointment, etc. everything necessary)
year supply of wormers, all for different types of worms
salt and salt block
leather halter for shows, grooming
halter name tag
feed scoop (i will feed him grain a few times a week)
feeding tub
height/weight mesurment tape
feed chart
tack cleaning sponges
tack soap/conditioner
spurs
treats
bucket for baths
tack trunk
bandage scissors
heavy duty blanket tape
lunging strap (holds up stirrups while lunging with a saddle on, not riding)
cooler (for drying and warmth when its cool out)
blanket/cooler storage bag
bridle/halter protective case

Thank you! anything i forgot, or dont need?
i dont need shots/shoes/sheath cleaner/floating supplies/medicine/supplements, as this will be done by a vet/farrier/dentist, and i dont need the medicine or supplements until there is something wrong with my horse

THANK YOU THANK YOU
detail please!

ok you do not need:

a tail bag- if the horse is going to rub it's tail a tail bag will only help a little.
Medium twist snaffle bit for training- don't get it. first off you probably wont need it and second off a harsh bit is not the answer to your problems.
Leather breastplate for jumping/trails- only need it if your saddle slips back.
Training martingale- don't need it unless he was ridden in one previously
feed scoop (i will feed him grain a few times a week)- yea you need this but if he needs grain he needs it every day not just a few days a week.
lunging strap (holds up stirrups while lunging with a saddle on, not riding)- waste of money, just run the sturrips up and loop the leather through them works fine.
Quilted saddle pad for flat work and fleece saddle pad for jumping- you only need one saddle pad for flat work and jumping, You only need two if your going to show.
spurs- if you don't need them don't get them.
bridle/halter protective case- I have one and it's more of a pain in the butt to use than it helps.