To start, I've been running a stock head unit and a soundstream powering a couple of infinity 6.5 in a 2010 Road Glide Custom. Recently received a 2013 king tour pack with pods so I'll be adding it to the mix.

Time to upgrade since I've lost the left channel. Amp or speaker, don't know.

This is what I have access to. Would like to use as much as possible but willing to upgrade if necessary.
Biketronics 4180
Biketronics 7.1 (non pro)
Alpine bt149 head unit

Need tour pak speaker suggestions to work with the 7.1's or I can start over with a matching set front and rear if it's gonna make a big difference. Will eventually add 6x9 in hogtunes lids. Not any time soon though.

Looking for Sq while cruising slow and high volume levels at 80 mph or so. System will be entirely set up for me. No competitions and not trying to impress the parking lot crowd. Just want to enjoy my music. Mostly classic rock, country, and blues. No hip hop, rap, or edm. Asking for suggestions cause I plan on keeping it for a while. You guys have seen and heard waaay more speakers than I ever will. I'm 60 and looking at retirement. Disposable income is gonna dry up so I need to get it right the first time.

Looking forward to suggestions and thanks in advance.