55-60 is not bad by my standards.
I found flattish / tall staysails and flattened out reefed mains the best alternative to a staysail combined with some donkey power. (But as you said you donkey was not operational.)
I do not mean very tall, but not 1:1 either.
BTW Very nice upwind sails
in a hull
not optimized for tight upwind work seem to deliver no advantage and may (IMHO) actually be worse than little fuller sails
that are in synch with the specific hull