entry level audio setup

Hi guys, please recommend an entry level sound setup : separates for front speakers, coaxial for rear and amp ( is this a must?) my car is 2013 honda city. my budget is 10-12k php. Im not planning to upgrade my HU. i am pondering kung better na i buhos ko nalang budget ko sa seps and amp and just stick with the stock speakers sa likod since most of the music i will hear will be coming from the front. If you think better din na maginstall ng subs kahit maliit lang, as long as it will fit the budget feel free to recommend. what do you guys think? any thoughts on this will be appreciated. feel free to give the give brand names an models since i am very new to car audio setup. im from batangas so i plan on having the sound setup in the shops here in the south ( kid audio, pro 1 etc)

thanks!