I suggest looking at Hollow's Last Hope. It's a free module from Paizo designed for 1st level characters. It surprised me how well this adventure is written and designed. In this case, the reveiws were not kidding.
I like non-standard adventures. Your occasional standard dungeon romp is OK, but I want that type of thing to be the exception, not business as usual. Hollow's Last Hope delivers that kind of adventure.
At its heart, the adventure is centered around wilderness exploration. There's a lot of work done for the GM, including a large map of the area. Instead of a dungeon, the climax takes place in an abandoned dwarven monastary.
I didn't like the plague theme, so I changed it a bit. Instead of needing the roots to make a concoction for the plague, I've set it to where the PCs need the roots for components in a spell that they need cast (long story--and it doesn't matter). To replace the plague time pressure, the spell must be cast before the next New Moon, or it will be 10,000 years before the next alignment of the stars. That gives the PCs 10 days to complete the adventure.
This is to say that I found the adventure extremely adapatable. You can play it straight or change it up, as I did.
And, if you like what you play, there's a few more adventures set in or near the same town.
GameMastery Module D0 for 1st level characters: Hollow's Last Hope (free download from Paizo).
GameMastery Modue D1 for 2nd level characters: Crown of the Kobold King (direct sequel to D0).
Pathfinder Module D1.5 for 5th level characters: Revenge of the Kobold King (the series continues).
GameMastery Module E1 for 5th level characters: Carnival of Tears (this is actually set up in a short random encounter in D0).
Pathfinder Module D4 for 6th level characters: Hungry Are The Dead
And, if you're going to spend a long time in this area, there's the supplement Guide to Darkmoon Vale that you might find useful.
Tons of fun. Expertly written. Pretty much a ready-to-go campaign, but you can play it episodically, if you want. Get D0 for free, decide if you like it, and go from there.