Those are some heavy sativas youre planning on growing. Generally sativas tend to double or triple in size once you switch to flowering so better account for that, with indicas the stretch is less profound (cca 50-100%). If you go with the sativa, then a limited space might be troublesome. Maybe do the autoflower first as they tend to be shorter (typically, but some can surprise), the cyclops is a cross with lowryder from what I read so should be pretty low in height. Autoflowers are also in general more resistant, so you might use it as a practice grow to test the setup and new techniques before attempting to grow a sativa which has a high light requirement and long flowering (sativas require more light than indicas as they are usually equatorial strains where they have adapted to high light intensity conditions).
good luck and happy growing!