brother instead of Nakamichi look for Pioneer active bass tube (with built-in amp, Pioneer TS-WX300TA is good),
Look for a branded used amp on olx, avoid king vox, a used presence or solid audio (original one) would cost you around 15 but audio quality is way better
I would suggest first get the components, if you feel you need more noise then add the sub and amp, dont spend 80k in one go...
with honda city a suggested combination would be components in the front, rear stock spakers or any good coaxial full range speaker, as for small sedans two components will produce way too much treable, place a bass tube in the boot. if active bass tube is expencive, get original s4 / 312 (pioneer) with 0.75 inch lasasni enclosure, one 4 channel amp, two channels for front components and two bridged for the woofer
the setup you shared is excessive, imagine one tweeter right behind your head and one right in-front, would be too lousy as in city the twitter is placed with door latch, two components would ruin the fun