want to build a singlespeed from this frameset when they are back in stock, got some questions though.

since im planning on only buying the frameset i get to decide what components i choose! which is fun but also raised some questions!

its a t47 BB so i've got plenty of options to choose im used to working on shimano hollowtech but it also gives me the option to run sram 30mm etc.

So im wondering which BB and which crankset would you run? like i said before i know shimano hollowtech but im wondering if something like a direct mount crankset would be a better option?

then secondly, what kind of wheelset? i want to run mine as a singlespeed road/gravel bike but should i just get a regular wheelset with say a shimano Hub and just space the chainring out with spacers?