Based on the 5:1 T:W rule of thumb, your thrust number will need to be five more than the rocket would need without that 2.5 oz. A trap to watch out for is that that can mean a bigger, heavier motor, which necessitates more nose weight and still more thrust in a vicious cycle that leads to HPR. But since you've already got rockets with this much nose weight, I guess you already know that you're not there.I have had a bunch of rockets with 2-3oz in nose to stabilize them (I use 2 and 3oz fishing weights or sometimes a nose-full of pennies). The challenge becomes getting a big enough chute in there so it comes down at a reasonable speed. I don't love putting that much weight in the nose but it is sometimes necessary to make a missile that has active guidance in the real world stable with just BP rocket engines (particularly give the weight of the 3D printed parts near the rear of rocket). That is why I put 24mm motor mounts in here.
Check the rod exit speed in the sims, then push the button.
(Can the 3D printed parts be lightened any? That would certainly help stay further away from the trap, and further up in the sky.)