Ruan, I think you will find that a lot of our crew here have hunted hogs, many of them hunt hogs all the time. They stalk them, they sit in trees, they do it a lot of ways but stalking is done all the time here, especially in our southern states and in California.
It sounds like you already have an idea of what you want or need, and are just looking for someone with experience to concur. The problem is, those that hunt them (a lot) use recurves, and longbows, and selfbows, they use heavy bows (over 60 lbs draw) and they use lighter bows (as low as low 40 lb and some even lower than that). All of them work.
Near the top of the Pow Wow page, you will see a thread regarding "where to aim". There is great information there for you, real information from folks that do this a lot.
Searches on hog hunt threads will show you that, no one bow (or bow style) is used and no one bow draw weight is used.
BUT, they probably ALL used well flying (tuned) arrows, good sturdy broadheads that were made very sharp, and they all shot the animal in a good place.
Hogs are generally shot from fairly close. Under 20 yards and very often under ten yards. You need to be capable at those sort of ranges, and yes, you CAN get that close.
There are a lot of used bows available on the market, there are a lot of new bows (but remember, many require a wait for at times well over a year because of those "in line" before you.
Good luck. I hope you find a bow you like for not too much money. Practice, and go get a boar. Then post pictures here !
ChuckC