Server chunk pregen (for beta 1.5)

I would need this plugin if there is no solution to my problem: I pregen a world that is like 221 GB in beta 1.5 server with world border and it crashed many times reset the chunk fill process back to region 0 it was hard to use ect, so I get what I think is needed, put a 1.12.2 spigot file in, start the server, it converts, crashes many times due to a lack of ram, restart it, resumes properly, done. I get on the world, its 1.5 terrain untill 7.8k blocks out... it cuts off and goes to new terrain. I don't think a 221 gb OVERWORLD is only 7.8k blocks in each direction. What did I do wrong in the conversion process. For every MCR, there is an MCA file. It converted them all, but whaaat???

Note: worldborder made all regions it generated 3.9-4.9kb in size... fake chunks, but why to 7.8k blocks, inside that it is still the same region size, what!?!??

Plugin category: World Generation/fixing

Minecraft version: Beta 1.5

Suggested name: BetaWorldGenerator

What I want: I just need a plugin that will work on a Bukkit BETA 1.5 server to pregenerate chunks, like, actually generate them. world border said it does this, but it fails to actually do it, it just makes a 4.9kb file for each region and thinks its all perfectly fine like a little sweet potato. So the functionally should be generally the same as world border, but to set a "border" and make it fill to that part, and then I can expand the border and make it fill more and so on. I would like a printout of percent filled, and chunk cords, ram usage and how far out it is in blocks just in case something happens. i would need a pause that would make it be able to resume if I stop/pause/crash the server for any reason so it won't reset like world border, and the world border config I would even set it back to what it was at when I last saw it and it would reset to 0. I would also like to have a speed setting, like chunks per tick/second.

Essentially I want a plugin that will be very similar to world border in terms of filling chunks, but I would actually like to GENERATE the chunks instead of a region file that is 4.9kb that has no real information that is actually real in it, even though it said it had blocks at certain positions ect.

Ideas for commands: (should probably be able to be used in console)
(Whatever commands you as the dev think are needed to git duh job dun!)

Ideas for permissions: No permissions needed.

When I'd like it by: Hopefully in 4-8 weeks maybe? (As soon as possible plis!!11!!)

I Would really appreciate this plugin, I an unable to have an alternative to what I need, I can't find a version of mcedit that will let me generate chunks in pre beta 1.7 and all that fun stuff.


Thanks!

 

So overall it is impossible to convert a world that size?

 

Yea, so I put in a more recent server version and it convereted to mc anvil, (the new format) and there is a mca file for every mcr file, so it converted all the regions, but it cut off the actuall terrain at 7.8k blocks, Why though?

 

Well I don't plan to keep it on beta 1.5 I want to update it back to 1.12.2 but I need to get that beta 1.5 terrain gen back really bad.