[TenTec] Astatic D104 mic and Pegasus

[Mark W4CHL]

Folks,

Before I do something really ill-advised, a question:

? Is it wise to install an Astatic D-104 mic with the TUP9SE amp on the Pegasus front-panel mic jack ? 

This mic "looks like a radio station microphone should" says my 
(X)YL, the Pegasus however doesn't "look like a radio".

So for visitors, including the special visits by the (X)YL and
the kids to the shack, I was going to hook the Astatic D-104
to the Pegasus (its companion radio long ago left the shack). 
I see that the Pegasus is spec'd for mics with 5mv (-67db) 
output, the Astatic mic has an amplified -20db output. 

Am I begging trouble by connecting the two ?  I'll start with 
the mic gain pot turned completely counterclockwise, but will 
that be enough to prevent overdrive of the Pegasus ? 

Never gave this a thought before on the older rigs (TS-520S was 
the last I hooked to this mic), thought I'd ask advice this time!

Cheers & 73s de Mark W4CHL