Given it's a MTB frame, I'd be concerned about whether generic fixie cranks would clear the chainstays.
If you choose MTB cranks, you should get a chainline that allows you to use a proper 135mm singlespeed hub in the future.
@Emyr started
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Given it's a MTB frame, I'd be concerned about whether generic fixie cranks would clear the chainstays.
If you choose MTB cranks, you should get a chainline that allows you to use a proper 135mm singlespeed hub in the future.