It's not advisable to simply substitute "also" for "too". "Too" should be put at the end of the sentence. Here's why:
My shirt is also red.
My shirt is too red.
My shirt is red, too.
The second sentence has a completely different meaning to the third sentence. Word order is important here.
For "wanna", do yourself a favour and never use it. It's poor and lazy English. Native English speakers who use this form are considered lazy and probably failed at school. Please avoid copying our bad examples. ;)