I forgot to add that it will get full sun, my backyard faces South.

Thanks a lot.

Japanese maples generally do not like full sun and you end up with leaf scorching and leaf curling during the hot summer months. Roses and Japanese maples need quite different growing conditions.

Not to mention the fact that all the leaves will get in your swimming pool. From your photo, the spot behind that plum color tree looks like it can be shady, maybe that's a better spot.