OK, so it's NOT a fixie? No lockring required. If you put your chainring on the inside of the crank, assuming it is a double crank, the chainline should be fine. FWIW, personally I like Shimano ss freewheels. They just seem a lot quieter than other brands, even some more expensive ones. They also allow the use of standard 3/32" chains rather than 1/8".
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