Hi there
If you want to go the Pistol route, you should do yourself the favour and invest IP into flingshot and burst, and get some upgrades slapped on those pistols, it'll work wonders for your damage output.
I don't know how high Quality level pistols you'll be able to equip as a Metephycisist, but check out
A QL 300 Kyr'ozch Pistol - Type 1. With enough flingshot skill you'll be able to get around 6 seconds Flingshot recharge, or there about.
If you chose to pair it up with another pistol, I'd advice you to get
A QL 300 Kyr'ozch Pistol - Type 4 for the added burst special.
In the endgame, you should be able to sit on full defence with a 15% Alien scope on, and still shoot these babies at a rate of 1/1.
Otherwise, you could consider the Bow Route with options like:
QL 300 Clan Turn spirit weapon; Seraph Bow
And the omni version:
Bow of Solace.
And a shadowlands drop:
Bow of the Tripple Nimbus (ql 300) (The lower QL versions of this bow are called Bow of the Double Nimbus).
Something to notice about these bows is their speed. They're slow as *insert nasty comparison of your own preference*.
Hope this gave some food for thought.
Best wishes
Kwautrawn.