Nice report, I really like that route and have been considering doing it again solo, I'm just not crazy about double carrying those 3 long portages. Maybe I would start at Cache and do Lawrence --> Frank/Harry --> Pen and out at Rock... skip the 3k at least.

Did you look at the PCI for Louisa before going? I added a bunch of campsites after last summer, and there were a bunch already on there as well. I've seen a good amount of the sites on that lake and there are a handful of nice ones... I'm surprised you stopped at the eastern most site on your last day, that looked like one of the least appealing to me!

Do you have more pics of the first campsite you stayed at on Louisa? That's one of the few I haven't gotten a chance to properly check out.