I'm new to pathfinder and I want to make a character that uses small idols that he makes by hand. I want him to use some sorta reanimate spell to make it into a familiar then when he gets in combat he would use some enlargement spell to make the small idols into the size of a person. They would fight just as a normal familiar
I'm afraid you have wandered into the forums for the Pathfinder 2nd edition playtest. You should probably post in Advice if this thread doesn't get moved there first.
To your question: Are you planning to play in the Pathfinder Society, or will this be someone's home game? A lot of things that aren't kosher in the Society can be worked out with a home GM.