You know what's funny is I researched suspension choices religiously for well over a month before committing and I can barely remember a thing now
I was gonna say it looks like your UCAs were dipping pretty hard (I'm running JBAs as well) so no real shocker there. I'm willing to bet your ball joints are taking a beating too with such high spacers. I get money's tight for many but I'm also gonna put my hat in and highly recommend doing something about it sooner than later though cause you're definitely asking for trouble as is. Or rather, more than you've already received
You don't necessarily have to go LT, as said you could just mess about with perches or get a different set of coils to use, depending on what kind of 5100s you got (4Runner specific, Tundra specific, etc) you might even retain nearly 3in without any top spacers. LT is a major commitment for certain
If you wanted bring down the rear to avoid rake while also being smart with your money, you could always go to Lowes or Home Depot and get a couple 50-80lb bags of sand or concrete for like $5 each. You might even find it rides better with a little weight if you think your rear coils are on the stiffer side