Valved reflux plans from moonshine still

[linearone]

I built this exact unit, pictures hopefully tonight. I just think that perhaps I should have modified the condenser.

Does anyone have experience with this particular one at all?
Will it work ok as planned?
Should it have more/less condenser?
In stills of this type can it ever hurt to have too much condenser?

I was thinking about adding a pipe cap to the condensor along with copper packing, not solderingit mind you just drilling like a 3/8"hole in the end of it to vent pressure, if any gathered, and just plopping it on there. Think that would be ok?