As right as rain - absolutely fine, hunky dory, tickety-boo
from “As Right as Rain - Caroline Taggart - 2013” → pg-124
rain check (wiktionary.org) - “a polite way to turn down an invitation, with the implication one is simply postponing it and that another time would be acceptable”
penny wise, pound foolish (wiktionary.org) - Prudent and thrifty with small amounts of money, but wasteful with large amounts.