I had the Xfactor motorized. Used a deep cycle very heavy battery. The Minn Kota had 3 or 4 forward speeds and a couple of reverse speeds. Rear mount with foot cables for steering. I purchased used and the set-up/ install was really nicely done.
https://www.youtube.com/watch?v=JXkw471NKgs : Kayak in action
https://www.youtube.com/watch?v=RDGTuRUTbGQ : Kayak walk around
this was my first kayak. Xfactor is super stable, easy to stand, would sometimes take my kid (7 year old at the time) on the gator hatch. I think there is a 300 lb weight capacity.
Having the motor was nice but it would never really last the whole day. i'd get maybe 5 or 7 miles of tooling around and would ultimately have to use the paddle to make it in. Forget a surf launch with a 30lb battery in the front hatch, hard to get moving. Worst wipe out was with the trolling motor to this day. The worst part of the motor is having a live bait getting line wrapped around the prop. Pain to crawl to the rear of the boat and dismount the motor and untangle, time waster. As time progressed, many of the connections were corroded and had to work on rewiring and replacing the "throttle" switch. Stuff just rusts out over time.
No regrets upgrading to the Hobie outback. Good luck.