Jeepers that's a large bulk capacitance.
If all you really need is an expedient ~1kV supply to charge cap bank with that energy that can power up off a 12 or 24 volt supply you could use a sine inverter off the shelf and a couple of appropriately-rated line transformers like:
but please don't quote me that I got those dots correct, or actually recommended any of this, damn son.
If what you need is like that but compact and very efficient and infinitely adjustable I'll have to defer. GL