Nice to hear things worked out fine. But I am not sure where you intend to chock the mast?
There is no need to chock in front of the mast foot, only the aft movement must be limited. BTW, for fine adjustment, never use anything else then clean copper pennies between the mast foot and the step pin (for good luck).
At deck level don’t chock at all as the mast must be able to move further forward when a gust of wind hits or when you pull the kicker. Chock at deck level only in very light weather to prevent the mast from bending. This will keep the main as deep as possible and at the same time allows a decent tension on the jib’s luff.