I planted 3 bare root apple nearly 4 years ago. I used Orange Pippin because I liked their rootstock options. And didn't have a problem with them at all.
During the first few months/year, make sure they are watered well. Especially in the dry summer.
Not sure how you garden, but everything I read said don't fertilize the first year. The goal is to make the root grow and if you fertilize, then the root get what they need for the tree to grow without having the roots grow as well. You want the root to grow deep and wide. (That's true for everything, but probably more so for young trees.)
Protect the bark around the tree base from mice/rabbits, especially in winter. There's a tape you can put on them. Or you can just stake a circle of chicken wire around each tree.
Cedar has a great pruning thread somewhere in the forum. You'll need to prune in the winter.
Maybe not a concern if you're growing dwarf trees... But if you get apples in the first 2-3 years, pinch them off as they are start forming. It helps root development because instead of using it's nutrients to produce a handful of apples those years, it can use that energy to grow roots to support dozens/hunderds(?) of apples in a few years.
We have a Golden Delicious too. They are a great all-purpose apple. I'm not sure about the Liberty, but I see that it's a triploid (like Cedar mentions). So it sounds like it's not a very good pollinator of other trees. We paired ours with a Fuji and a Honeycrisp (in hindsight, I wished I would have done a Jonagold instead).
I'll second the suggestion to taste different varieties. But I'll add to get at least one tart apple (like a Granny Smith) not just all sweet apples. Having multiple flavors in your apple sauce makes it taste much, much better! Maybe even stagger maturity times to extend the fresh apple season. And get some that keep longer (typically less sugar content).
