The wide angle and and 2x in that kit or worthless, honestly. Those are not true stand-alone lenses, they are things to add on to the front of the main lens and cheap shortcuts. Quality will not be great. Tripod most likely be a cheapo as well. The kit has a lot to be desired unless it gets you enough extra storage cards and batteries..but I would avoid most of the time.
Yeah, it is good to get a basic camera and lens, then add on as you need. Solid advice always. Often the camera will come with the two "kit" lenses which will be the 18-55mm and the 55-250 all at once. That cover wide angle to a decent 8x tele on the long end of the zoom.
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Hard to get items in stock. B+H is a good company. The 70-300mm lens is probably a decent lens as well.