Seeking Airbag Advice for Lifted F150/TC650

Grit dog wrote:
What he said^.
You need to let your springs take enough weight that it engages the lower main leaf.
That means it needs to sag a couple inches at least.
Of course if the truck is leveled that will make it ride nose up.
What actual lift do you have and tire size?
Does it still have some rake? IE most lifts are less in back to level the truck when not loaded.

Springs are obviously not a 2 beer job like airbags, but if this is going to be a long term setup I’d get the heaviest springs i could put under it, reasonably.

There are many ways to skin this cat and each have some advantages and disadvantages.
With stout springs, you may reasonably get by with those only (2500lb springs like you posted seem a bit light. Unless you’ve actually weighed the camper, it could be heavier than you think).
Springs and Timbrens shimmed up pretty tight might be a good way to go too.
If you have the option of doing one step at a time and then test driving it, it could save you some additional time/expense of trial and error.