6063 aluminum info

[Piggiron]

Looking for info and opinions on 6063 aluminum.
After shopping around for material for my "Canoe Catamaran" project (https://www.homemachinistsjournal.com/index.php?topic=120.0), I can find no local suppliers for either 80/20 T-slot or 6061 square tubing. Shipping for online orders is ridiculous almost doubling the cost.
I found a couple local suppliers within easy driving distance, but the only square aluminum alloy tubing they carry is 6063.

I was hoping someone here has experience working with it.
Current plan will not require welding.
I'd rather use aluminum due to the desire for minimizing weight, but barring using 6063, I may have to consider using steel instead.

[chips and more]

Hopefully this can help.

https://www.industrialmetalsupply.com/aluminum-6061-vs-aluminum-6063

[4GSR]

Looks like you really need to be using 6063, not 6061.

[Piggiron]

Thanks for the link Chips. I'll have to go check it out since the place I contacted is only about a 40 minute drive.
They quote me a price of $125 per 21' stick, but I didn't get a wall thickness.