I look through my binos a lot more than my riflescope. I think they are more valuable than the gun scope combo. I'll spend hours a dat looking through them, so if they give me a headache, I probably won't use them as much. As to the range finder, I prefer a seperate one. Do you want the rangfinder to fail and then you have to replace the combo unit, or just replace the range finder.
Bushnell actually makes a great rangefinder. I much prefer it to my Leupold that I spent three times as much on. It is more accurate than my Leupold and ranges further as well.
As for binos, spend as much as you are comfortable with. I have had Bushnell, Brunton, Leupold, Minox and several others. I have a couple pair of Swarovski now, and I wish I hadn't wasted the money on all the others. I easily spent as much on cheap binoculars as I did on the Swaros. I figure I will have these for a lifetime. I will be getting another pair of Swaros, as mine are both 10x. Im looking for a set of 7x, but if I have to 8x. The 42mm lenses are much clearer and allow more FOV than the 32mm. I feel they are worth the extra weight for the amount of FOV they allow.