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You don't want to hear this, but I recommend 10x50 or 12x60 to start with. You can mount those on a regular camera tripod as well as hand-hold.
I have 20x80 and I had 30x100. My experience is that they are extremely hard to use effectively without some form of mount. I did put the 20x80 on a camera tripod (not top of the line, but not a cheapy) and they broke it eventually.
The other point is that it can be a real challenge to locate an object at 20x, let alone 30x magnification, particularly at a significant elevation in the sky when you cannot start from a known object on the horizon and scan vertically to the object of interest. I had to fit my 30x100 on a big mount with a red dot finder to get what I wanted into the FOV.
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