La Migra,
Welcome to TFL & just a coupla ?s & observations.
Why the "10x42 or 10x50" binos? Any specific reasons behind these exact power & objective diameters?
10Xs may be a touch on the high side to hold steady comfortably for general field use. 7-8s seem to be the "better" magnifications for this & do provide for pretty good viewing.
Too, the 42-50 will gather quite a bit of light for dawn/dusk viewing (as opposed to a 35 say) but, again, why specifically these objectives?
More curious than anything.