If you are going to use that hackamore, I'd suggest you try it with a curb strap instead of a chain. Most horses don't need the chain, it's too harsh. Use a light hand for your signals too.
A bosal is either all rawhide/leather, or some have a cable/steel core. The rawhide is less stiff, over time. There are no shanks, but the reins are attached to the bottom or end of the bosal. A new stiff bosal can rub the horse's nose or cheeks so you do have to check it daily and adjust the fit if necessary. If you do get a rub, I'd use something else for a week till the rub heals.
I use an old well-broken-in bosal, some might say it's too soft, but I like it and so does my mare.
A horsehair rein is traditional to use with the bosal, some use a cotton rope; I use a leather rein. The horsehair is bulky and very scratchy. Cotton is also bulky, I don't like that either.
You can direct rein with a bosal or neck rein.
A side pull is a stiff rope noseband, with rings on each side of the nose for the reins. It's very good for starting a horse, you mostly direct rein with it. Again, the stiff hard rope can cause rubs, you have to check your horse for abrasions, or wrap the noseband in fleece or padding.