Yaris Sedan Deadening and Sound system upgrade

[packetrace]

I have a couple of noob question for you guys....it would be really helpful for me....i'm going to start my audio system upgrade soon and i'll do a little bit of deadending in the trunk and on the floor....welll i will put two 12''subwoofer and i want to replace and amplify my two 6.5 and my two 6x9 and add little tweeter at the front in the a-pillar...

well what kind of amp do i need for the low(tweeter), the mid(6.5) and the high (6x9) ?

For the sub...Ported or not ?

For the deadending...only CLD tiles will make a difference in the trunk and on the floor even if i do not put MLV ?

Do i really need a audiocontrol like you are adding ?

Do i really need to change the battery ? or the big three will be enough ?

thanks to you and i'm sorry to disturb the tread but it's one of the most complete thread i found

thanks again!!!