i hope you are careful with that 100kv.........that can kill you even if you stand near it without touching it. Seriously kill you.
I once stood 50cm away from a 13kv terminal, my 4arm was 50cm from it, and i cold feel the muscle in my 4arm vibrating from the 13kv's electric field coupling up to me.
I think you may be gravely mistaken. You do not want to do this..surely
But regarding that bridge, it should use fets for that high frequency,
Also, you likely need a series dc blocking cap....or do it in current mode by putting a CST in there.
Otherwise those splitting caps will go asymetric
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Also, add gate to source resistors, say 10k.