Raising the front a quarter I see no problem and may not even need to realign the front end. But I don't think you'll get any real change in the way the car sits in the rear.
Yeah I don't think a 1/4" rise on the front will do much of anything for the rear ride height. Probably not enough to be worth changing the alignment either, but that is still something you should check because if you're on the borderline of a range now it could be enough to push you slightly out of spec. The toe-in is the most sensitive, even a small change in toe can result in tire wear long term. For a 1/4" the camber/caster won't change enough to be an issue or even likely be noticeable.