My first question is this..........
"I have an orchard filled with Black Cherries, Bing cherries, Bartlet pears and several types of apples.
How will me starting these hives effect the amout of fruit my orchard will produce?"

I don't have any first hand experience with this, but I have heard others claim a noticeable difference when they started keeping bees. I guess it is highly dependent on how many native pollinators you have in your area.
My second question is.....
"I Know in a Langstroth hive a queen excluder can be used to keep the queen in the brood stores and out of the honey stores. How is the brood comb and the honey comb kept seperate in a TBH???"

You run a TBH the same way an unlimited brood chamber Langstroth is run. You take the frames from the outside farthest away from the brood nest. If you have a really prolific queen, you may have to wait for brood to hatch and the cells be filled with honey
My third question is.....
"In the event I would instert these packages, and I either lose the queen or the brood rejects the new queen and leaves her behind, in one if the new hives...What would be my next step?"

If the queen is killed, you will need to requeen as soon as possible. Since packages have no brood, they are actually on a continual downturn for the first month until brood starts hatching to displace bees that perish, that is why timing is crucial. You want to get brood hatching and the hive on an upward turn ASAP.
And my final question...

" I intend on capturing some ferral swarms later on...Is there a danger of infecting or introducing an illness to my other bees by moving in a hive of "wild" bees along side my packaged bees?"
For the most part feral or wild bees are your best stock. They are already acclimatized and untreated. If they have been feral for a while, they are already regressed and a survival stock. I only use feral stock for my bees.
good luck and welcome to the forum