After building a 5F2-A for someone else out of their abandoned kit (one that was fraught with errors/problems and inconsistencies — ex: ever had a mirrored chassis layout anyone?), I went with the sourcing-everything-myself route for my own build, a 5E3.
I used Mojotone's assembly-instructions as a rough guide, but used my Amp-Sifu's wiring tweaks which made for a quieter noise floor.
I don't agree with the "don't build something you'll immediately outgrow" philosophy — did Brian May outgrow the little Deacy and switch to AC30s? Did Page outgrow the Supro [Coronado 1690T] and go to Marshall stacks? Has Clapton outgrown the 10-watt 57 Super Champ?
No, these musicians used different amps and methods, some even recording direct through a console, to achieve a sound — there's nothing to outgrow, there's only
DIFFERENT FLAVOURS!
I can heartily recommend the 5F2-A, it's a Champ with a tone control, and I see nothing wrong with making it (or a Champ) a first amp build.
Having said that,
@BuddytheReow, I have to say based on your pedal-build-guides, breadboarding tutorials, builds and conversations here — I think that...
...you'll be able to build whatever the bloody-hell you set your mind to building. Whether that's a Champ or a Deluxe Reverb, or something in-between, it all depends on what path you want to take to get to your destination.