I live in the West Coast and my daughter lived in Stirling If staying in Stirling for food, The birds and bees is an excellent place to eat.
Re drives, depending how long you want to go, or do on different days but Loch Lomond up to Inveraray you will struggle to beat, stopping at The George hotel in Inveraray for lunch, and if you felling likes drive from there, upto Dalmally. You then have the choice of going to either left to Oban, Cuan Mor or Eesk for food, or go right, to Glen Coe.
You can do both these trips separately, Inveraray one day directly from Stirling and Glen Coe, two of the most stunning and scenic drives you’ll do :driving: