I don't think latex will do very well. The price difference between a cheap automotive SS Acrylic and a gallon of tractor enamel is about $0 but the shipping on that $30-40 gallon of auto paint will tack on another $20-30..
$35 for a gallon of Valspar tractor enamel and $15 for a bottle of hardener. Add in some mineral spirits or even their branded reducer ( both will work ) for well under $100 and it will dry in a day and stay nice for 6-12 months. likely look 'decent' thru the duration of the $100 Subaru's lifespan.