Bars are sold in sets for reason. A 19 and a 19 are mismatched for balance as are mine with RMDSM at 20.6mm each but you also have 2 different brands. You will be tail happy with that setup so you will need to learn your car's driving characteristics again. No more trail-braking or fast swooping curve without some throttle. The plus is that you will be able to powerslide with a setup like that. I prefer my setup like that. It makes it act similar to a RWD car but defintely not for everybody. I have ZERO ROLL with these bars and GC/Tokico suspension, as well as thicker and stiffer bars than what you're thinking about but for me it's more dramatic but worth it. Yours will still have tail swing but not as pronounced.

Skrilla
'97 Base Talon NA
"Technology is the Only Substitute for Displacment"
"Peace and Turbo Grease"