I do want to drive home that going Fighter 3/4 isn't a great idea.
You'll get one feat from those two levels, and you won't have it in time for Act 5. By level 7, you'll have gotten one feat, 2 skill points and have 65hp total.
Feat rogue 2 gives 14 skill points with a better list, shores up your reflex saves, and of course has two feats.
(It also gives you Spell Reflection 2/day, which isn't great on your touch AC, but hey, it's free stuff. Fighters don't have any class features at all.)
You only come out with 61 HP that way, but that's still a ton.
For other stabby types, the real downside would be the BAB lost, but you've already done the cleric level, so unless there's a different medium BAB class you're hoping to get into later, this is pretty much a pure advantage. Please do think about it?