first welcome to the Site.
couple things to keep in Mind.
the bottom board in the plans is a reversible one, the bottom or flipped over opening for the bees is 3/4 the way it is in the pic is 3/8, I also build my own stuff and do not reverse the BB. less hassle to built IMO
Make the ID Inside dimension, of the hives, the one to stay prefect with. I use 1 inch rough sawn planned down to 15/16 for the hives I make.
I "Would" recommend you have frames on hand, for the sizes you build, to try and get the first couple boxes set right to them,, then make more. I have found that frames from Dadant , vrs, better bee, vrs, Mann lake are all a bit "different" they will mostly work across the board but there are some that can bite you. them stay with that vendor to maintain the same frame size.
Between the top of the frame and the bottom of the frame, 1 box up , ideally you have 3/8 bee space. Some vendors put it all at the top some the bottom, and some split it. Pick a way you like and just then stay consistent.
I do the deep (9 5/8) and the medium (6 5/8) only. IMO the Shallow or smaller sizes are the same amount of work for less space.
Also I am "older" and have started to make 8 frame gear, helps with total weight and how far past my belly the center of mass is.
good luck with your building, PM Me if you have something to ask,,
If you can,, find some one with bees,, and go look at a complete hive to get a feel for the end product.