Overall I think the strengths more than compensate for weaknesses.
The Monk and Druid can fill in some Rogues skills, imperfectly but good enough. Summoned Animals can spring some traps.
I would note that you have a lot of combat staying power with both an Animal Companion and eventually a Special Mount in the party to help hold the line. That will help the Sorcerer stay healthy, and allow the Druid to Summon during combat.
You have reasonably distributed healing as well -- Druid, Paladin, Monk (a little self-healing).
I think this is a better party than Fighter, Cleric, Wizard, Rogue.