Blacksmithing 300 - 375

300 - 305
Fel Weightstone (1 x Fel Iron Bar, 1 x Netherweave Cloth) x 5

305 - 320
Fel Iron Plate Belt (4 x Fel Iron Bar) x 15

320 - 325
Fel Iron Plate Boots (6 x Fel Iron Bar) x 5

325 - 330
Lesser Rune of Warding (1 x Adamantite Bar) x 10

330 - 335
Fel Iron Breastplate (10 x Fel Iron Bar) x 5

335 - 340
Adamantite Cleaver (8 x Adamantite Bar) x 5
N.B. This is a limited supply recipe sold by either of the following:
Aaron Hollman - Shattrath City
Arras - The Exodar
Eriden - Silvermoon City

340 - 345
Lesser Rune of Shielding (1 x Adamantite Bar) x 10
N.B. This is a limited supply recipe sold by either of the following:
Mari Stonehand - Wildhammer Stronghold (Shadowmoon Valley)
Rohok - Thrallmar (Hellfire Peninsula)

345 - 350
These 5 points can be a bit of a problem to be honest. Lesser Runes of Shielding can take you to 350, but it's likely you will make around 40-50 of them.
You can make Adamantite Rapiers (12 x adamantite Bars), but you're likely to have make about 7-10 of these, so it's more than making Runes.
The best option here from a pure "Skill up" perspective is making Adamantite Breastplates. But each one requires 2 Primal Fire's and 4 Primal Earth's as well as the the 12 Adamantite Bars. If your a miner then the Earth's won't be too much of a problem, but the Fire's can still be a pain to get and are expensive to buy.
The plans for Adamantite Breastplates are also a limited supply plan, which is sold by K.Lee Smallfry and Loolruna in Zangarmarsh for Alliance and Krek Cragcrush in Shadowmoon Valley for Horde.
I won't include the mats for these 5 points in the final total.

350 - 360
Adamantite Weightstone (1 x Adamantite Bar, 2 x Netherweave Cloth) x 20
Requires Honoured rep with Cenarion Expedition, which is fairly easy to get

N.B. from 360 onwards it gets tough to get recipes that will skill you up, as trainers won't teach you anything worthwhile. Everything that will skill you up past 360, is either a random drop pattern or a rep reward. The two best and cheapest ways are to get Scryers or Aldors rep.

Aldors Rep Path

360 - 370
Flamebane Gloves (8 x Fel Iron Bars, 4 x Primal Water, 4 x Primal fire) x 10
Requires Aldors honoured rep to buy pattern and it's BoP

370 - 375
Flamebane Breastplate (16 x Fel Iron Bars, 6 x Primal Water, 4 x Primal Fire) x 5
Requires Aldors revered rep to buy pattern and it's BoP

Scryers Rep Path

360 - 375
Enchanted Adamantite Belt (2 x Hardened Adamantite Bars, 8 x Arcane Dust, 2 x Large Prismatic Shards) x 20
Requires Scryers friendly rep to buy pattern and it's BoP

Alternatively, you could keep running Auchenai Crypts for the Felsteel Gloves. It's entirely possible for any class with decent DPS to solo farm for these plans. All it takes is a bit of careful timing. The mob that drops it is called an Auchenai Monk and if you enter the instance a look for the first one you can see, you'll notice that after a while he will end up on a spot on his own. Careful make your way to this spot by timing your runs past the patrols and pull and fight him there. Normally takes between 10 and 20 attempts for the plans to drop, so with the 5 dungeons per hour rule, this should only take you about 3 to 4 hours to get.

360 - 375
Felsteel Gloves (6 x Felsteel Bars) x 15

Approximate Materials Required

Aldors Rep Path

294 x Fel Iron Bar
80 x Adamantite Bar
45 x Netherweave Cloth
70 x Primal Water
60 x Primal Fire

Scryers Rep Path

134 x Fel Iron Bar
80 x Adamantite Bar
45 x Netherweave Cloth
40 x Hardened Adamantite Bars (That's 400 x Adamantite Bars)
160 x Arcane Dust
40 x Large Prismatic Shards