Out at the family cabin again and thinking I'd like to get some algonquins for the covered porch. I'm thinking of placing them up in the corner (see attached photo). How high up can they be placed and sound good?

Looks like you have no speakers there currently. I think anywhere you put the Algonquins, they'll sound infinitely better than nothing.

Good point . I'd like to get a pair for my grandparents/parents (and myself) for Christmas