Pick a 3X9X40 scope and put it on. Sounds like you'er on a tight budget, so just get the best you can afford and upgrade it when you can afford to. Sight it in for about 1.5" high at 100 yards and you'll be able to kill coyotes out to 200 yards by putting the cross hair on the kill zone.
About any hand call on the market will call a coyote. If you're new at it, I'd suggest getting a couple of different enclosed reed calls, maybe a PC-2 from Dan Thompson, or a circe rabbit call will work for starters. I prefer open reeds, but they do take some getting used to, maybe even a little practice to get good consistant sounds from them. The enclosed reed calls sound good just about no matter how hard you blow them.
If you've never called before, I'd suggest getting a calling dvd or two and watch and listen to how it's done, to give you some ideas of the sounds you need to mimic. Or, find someone in your area that already knows how to call, and go with them a time or two, you'll learn alot more and quicker that way than any other way.

Use some hollow points, soft points,or ballistic tipped ammo. thatare accurate out of your gun, and go for it.