All of your citations are addressed by the OT. As to the burning of the weeds, Isaiah 24 addresses this.
Isaiah 24:
1 Behold, the LORD maketh the earth empty, and maketh it waste, and turneth it upside down, and scattereth abroad the inhabitants thereof.
2 And it shall be, as with the people, so with the priest; as with the servant, so with his master; as with the maid, so with her mistress; as with the buyer, so with the seller; as with the lender, so with the borrower; as with the taker of usury, so with the giver of usury to him.
3 The land shall be utterly emptied, and utterly spoiled: for the LORD hath spoken this word.
4 The earth mourneth and fadeth away, the world languisheth and fadeth away, the haughty people of the earth do languish.
5 The earth also is defiled under the inhabitants thereof; because they have transgressed the laws, changed the ordinance, broken the everlasting covenant.
6 Therefore hath the curse devoured the earth, and they that dwell therein are desolate: therefore the inhabitants of the earth are burned, and few men left. (emphasis mine)
In the conflagration at Christ's return, there are men left who survive the fire, which is also affirmed by Zechariah.
Zechariah 14:
1 Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.
2 For I will gather all nations against Jerusalem to battle; and the city shall be taken, and the houses rifled, and the women ravished; and half of the city shall go forth into captivity, and the residue of the people shall not be cut off from the city.
3 Then shall the LORD go forth, and fight against those nations, as when he fought in the day of battle…
9 And the LORD shall be king over all the earth: in that day shall there be one LORD, and his name one…
6 And it shall come to pass, that every one that is left of all the nations which came against Jerusalem shall even go up from year to year to worship the King, the LORD of hosts, and to keep the feast of tabernacles.
Isaiah also writes about this time.
Isaiah 2:
2 And it shall come to pass in the last days, that the mountain of the LORD'S house shall be established in the top of the mountains, and shall be exalted above the hills; and all nations shall flow unto it.
3 And many people shall go and say, Come ye, and let us go up to the mountain of the LORD, to the house of the God of Jacob; and he will teach us of his ways, and we will walk in his paths: for out of Zion shall go forth the law, and the word of the LORD from Jerusalem.
4 And he shall judge among the nations, and shall rebuke many people: and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more.
So what I said has a basis and affirms premillennialism, while amillennialism truly has no basis when all scripture is considered.