I suggest you start in English lessons even if you want to trail ride Western later. I think English starts you off with better balance than Western does. IMHO, it is easier to be "lazy" in the Western tack than it is English. By lazy I mean using the tack to help with balance. This is coming from someone that never really had lessons and watches her friends ride English. I wish I had been taught things like posting and such.
As an instructor and hunt seat rider for 35+ years, I can almost
agree with this but there is a very good reason for not starting English right away. I was a devoted horse nut from the very start and all of my lessons were Hunt Seat, in fact I never even sat on a Western saddle until I was about 16! Yes, I learned to be an excellent rider but in the beginning there were a lot
of falls with an extremely strict, pushy instructor. She was a great coach but made it clear that she didn't want to train any wimps. Many, many kids there would fall once or twice and then quit. It took a lot of determination to keep getting back up there no matter how much it hurt.
start my beginners Western for safety and to let them develop balance and control first. It's going to take time to learn to move with the horse, not snatch at the mouth, use your legs properly without gripping. They are never allowed to wear spurs but unfortunately a lot of Western people in my area require them and the kids never learn to use their legs properly. I don't really give my students time to become "lazy" and if they do, I push them harder or throw an English saddle on the horse. Better yet, I'll make them ride bareback for a bit!
This is a sport that looks easy from the ground but is incredibly hard! Unlike my old time instructor, I like to keep falls to a minimum and I'm not ever going to let someone go jerking on my horse's mouths. When they are good enough, I let them switch to Hunt seat if they want.
In a rural area, there aren't going to be a lot of choices in instructors. It's not like you are going to go interview 5 or 10 of them. Just make sure that
horse handling, tacking up and horse care are part of what is being taught if you want to own one someday. Many
instructors do not want to take the time to do that. Many are only interested in kids who have the money to show and as another poster said, not only will it mess up your own riding schedule, you will feel left out when everyone takes off to the weekend show.
One other thing that happens with scheduling. Save time and devote that time to your riding lesson. I have dropped many a student when they start routinely cancelling for volleyball practice or some such thing. We instructors certainly understand that things happen and will occasionally have to cancel ourselves but if some other sport becomes more important than riding, we can always find someone else to fill your spot.