After Market Stereo Install

I orginally had installed a lineout convertor in my 2018 Elantra GT with 2 amplifiers and installed all new speakers using the factory radio. I did not like the sound at all. So I replace the oem radio with a Pioneer AVH-3400NEX. It is a single din radio with a slideout touchscreen display with android audio and apple carplay. A wiring harness is available from Metra. I used the mounting brackets from the factory radio. Radio trim piece i had to custom make out of fiberglass . I used 4 ga power wire running from the battery to the Jl RD900/5 amp installed over the spare tire. Focal PS 165 midrange and tweeters in the read doors. Focal PS 165 tweeters in the dash and PS 165 midrange in front doors with Metra adapter mounting plates. The JL amp is running 75 RMS X4 and 1 X 500 RMS to the Kaption Audio 12 inch subwoofer and ported box. I could not get the factory backup camera to work, i replace it with a Kenwood CMOS-230 backup camera. In doing this system install, i did loose my steering wheel radio controls for now. A interface is not available yet. My next upgrade will be, to get the usb and auxilary input to work with the pioneer headunit. I also plan on making a fiberglass subwoofer enclosure