That sounds about right, 14b's were made to spool pretty quickly.
As far as I understand it is if you port something, it will cause the lag time to increase but help with the top end. I doubt it would be that noticable on a 14b car. My 14b would spool up at different rpm's then yours but then again I had a ported FP evoIII exhaust mani and hks272/272 cams with my 14b.
From what I have experienced you wont really be able to notice a difference in turbo lag till you get up into the 16g turbo range. Especially if you clip it along with the port.
Just have fun and go crazy with the die gringer, it's only a 14b and no matter how much you port it(unless you port a hole in the side) it's still gonna spool up faster then any other turbo with the same applications other then a t25 or a 13g.