Advice on simple budget friendly speaker upgrade.

Goal is to swap out the factory speakers with aftermarket plug and play speakers , and the Beat Sonic amp for hopefully a noticeable improvement over the oem speakers - with full understanding this is a budget solution

2024 Prius Prime XSE with 12.8 infotainment.

I've ordered the Beat Sonic ENE 3T3 amp

Four Kicker KSC67 - for front and back doors

Two JL C2-075ct tweeters for dash

I'm comfortable dropping all this in - plug and play all parts needed come from Crutchfield - easy and have done before to other cars .

My question is - I have no real car stereo technical understanding - besides new speakers all around and the plug and play amp is there anything else simple I can do to improve sound while I've got it all open and doing the install?

I know when I pan back to the rear seat oem speakers they sound awful - this sort of influenced this upgrade - hope at the very least that will be improved a little

Any and all advice welcome

Thanks in advance