You don't have to worry that much about the brakes if they're in good shape. Just don't ride them, Use lower gears, etc.

I've discovered that all of my vehicles without coolant reservoirs should be filled to about 2 inches below the bottom of the filler neck. If you over fill it, it'll find it's correct level naturally.

There's a coolant reservoir on my truck that works perfectly but you can install a temporary container to catch overflow if seeing coolant puking from the overflow tube stresses you out..
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1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)