What is the best squad I can build only using what I own? Here's what I've got 4 X-Wing's, 2 T-70's, 1 z-95, 1 Y-wing, 1 A-wing, 1 K-wing, 1 HWK, and 1 YT-1300. I also have a promo Poe dameron. 2 x-wings are from the original core set. All help is appreciated. Outside of the best possible list I would also like to make a all non unique list. I know I don't have all the greatest stuff to make a really great list so please don't say autothrusters, etc.

You've got the fixings for some fun lists. What is "best" will be determined by how you like to fly.

One possibility:

Miranda Doni [K-Wing] (29) + Gunner (5) + Advanced Slam (2) = 36

"Red Ace" [T-70] (29) + R2-D2 (4) + IA (0) = 33 ← If you have a TIE/FO, you can spend 2 points on a Comm Relay here instead of the Advanced Slam above.

Tycho Celchu [A-Wing] (26) + Expert Handling (2) + EI (3) = 31

Another:
Biggs Darklighter [X-Wing] (25) + R5 (1) + IA (0) = 26

2x Rookie Pilot [X-Wing] (21) + R2 (1) + IA (0) = 2 x 22

"Dutch" Vander [Y-Wing] (23) + Targeting Astromech (2) + Ion Cannon Turret (5) = 30

All Generic:
4x Rookie Pilot [X-Wing] (21) + R2 (1) + IA (0) = 4 x 22

Bandit [Z-95] (12) = 12

Something similar to the list in your signature:
Poe (29) + PtL (3) + R2-D2 (4) + IA (0) = 36

Roark Garnet (19) + TLT (6) + Recon Spec. (3) + Moldy Crow (3) = 31

Horton Salm [Y-Wing] (25) + Targeting Astromech (2) + TLT (6) = 33