There is no such thing as too big when it comes to a bird cage š The bigger the better!
Looks good- and it looks like you already have all the approval you need already! Now comes the fun part.... toy arrangement!!
Bon appetite!
To your birdie, and to you in case you overcomed with greed and decide to pinch and glut yourself on some of the wonderful mash you cooking up for for your birdie.
What was going on before the behavior? Were you stroking his back or his belly by any chance?
Once a day isn't excessive actually. Simply ignore the behavior whenever he elicits it.