Diagnosis first. -> WHY <- did the hive crash.
Know that first before putting any resources to it OR to use the bees or equipment from it in any other hive.
The number one cause of a crash at this time of year is high varroa mite. Parasitic mite syndrome (PSM). Google that so you know what to be looking for as you examine the combs more closely.
The number two cause of a crash at this time of year is a failed supercedure a month ago. Since you have larvae present, that is not the case.
That is based on what you shared so far. There are other causes, too time consuming to list them all off. Show us some pictures and that may lead in specific directions. For example another possibility is EFB, which you can read over here at:
https://beemaster.com/forum/index.php?topic=54019.0;allNext is the experienced advice: "Take your losses in the Fall". Which basically means, NO to your plan. The hive as described is likely well beyond recovery this late in the year. Even if you requeen, there will not be any appreciable amount of new bees until end of October. And there would not be many as queens are really slowed at this time. Just shake it out and put the equipment away. Come back in the spring and try again. Ensure you know the cause and understand what to do about it, because the equipment may need treatment before it can be used again. If you have other hives that the bees will migrate to, the bees may need to be treated or the other hives will suffer the same fate.
Do you have other hives or just the one?