Clip on NV from HTRN

Although I have dedicated thermal and NV scanners and scopes, I do have a rifle I'd like to be able to use day and night without always re-sighting in. At night, my shots are close (40 yards or less). I see side focus is critical. What about reticle type/thickness. Is it an issue when using a HTRN jackrabbit kit?
 
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