Of those, I'd be most comfortable running Rise of the Runelords.
Of course, running solo in an adventure path designed for a party of four is rough, even if you're getting all the loot for yourself and you're gestalt. I'm not fond of running GMPCs, though NPCs might roll with you from time to time. If you want to run a second PC, too, feel free, or you can just start off with an animal companion or eidolon as a bonus friend your god sent you, and at fifth level Paladin, you can just take the magic sword divine bond. Your god really likes you.