I know this is a real old video but you built this where I currently have both my house an my workshop on my friend's server. Its such a nice spot. Beautiful Build!
Assume you need 1000 foundation, heres why; 0:41 starting foundation is 9x9 (height 1-2b) (81 foundations), 1:02 extend outer foundation height by 2 (minus spot for door)(32 Foundation) (113f total), 1:54 box archer tower + bridge concept 5x5 (height 2b) with bridge connected to center, (100 Foundation), extend away from the river 10x1 (20 Foundation) and add a 3x3 (18 Foundation) (both are 2b high) (38f total), 2:53 extend towards the front 4x1 (2-3b high) (8-12 foundation), then away 5x1 to construct a dual gate (3b high for the first and last block but the 3 in center stays 1b on ground level), 4:20 infront of it add a 5x5 base to get to the curtain wall (3b high but layers create a upturn u-turn staircase) (75 Foundation max), 4:36 increase all previous foundation attached to gate on side of main castle to gate height, 6:09 extend gate tower towards parallel to the castle by 7x1+3x3 square (both are 3b high) (21 Foundation for the curtain wall + 27 Foundation for the square), 6:13 next extend a curtain wall towards main foundation by 3x1 6:15 then add a 6x1 curtain wall turn 90* towards the right (2b high), 6:46 next make a curtain wall 3x1 90* towards the left then 7:00 add a 6x3 guards tower, 7:06 extend from its center 2 foundations, turn right for 2 Foundation then left again for 5x1 curtain wall with a 3x3 tower 7:32 (continue matching height by 2-3), 7:38 extend a curtain wall 90* towards the center left by 6x1 connecting to the main starting foundation. Total foundation so far? Somewhere in the 600-750s so if you start with 100 foundation and adding in section enough to 1k foundation then you still have materials left over for building the walls and doors next.
is it possible to sloow the speed in the video down? i have the playback speed at 0.25 and your still too fast for me really see what the dimentions are.