It looks like you've done all the hard work already!
If you do want airways to the west of Paris, the following should work:
-N0145F100 MEN A27 CFA R161 NEV A3 DOMOD H20 LGL A34 MID DCT SAM
I've never been in to EGHH, but I'd be surprised if you got much beyond SITET before London give you a DCT towards Southampton and Bournemouth.