The trick seems to be to just assign the rabbit at 2/2/0 (wood/stone/build) then focus on maxing roads first then, wood and stone at once and after you did all that, store enough material to finish the statue (50 of each) and assign all to make the statue.
Would definitely be easier if you have a touch screen. Some way to speed up would be to use your ability to move rabbits and materials quicker than max lvl road can:
You can reassign the bunny whenever they just "mined" materials out, and then transport the material on the ground yourself. (I'd say don't do this after you already got max lvl mill or quarry since unless you're trained or just good at it, you probably can't transport 3 material quicker than the rabbit)
You can also move rabbits back to their station quicker than they can move themselves(especially quarry since they are much further from storage than mill).
