Honda-SOHC

Hello all

I am a newbie to the forum and am just after a bit of advice, this is my first ever proper bike, ( I had a DT50 when I was a young) but I have restored a few classic cars in the past and have always worked on my own vehicles, so I have some mechanical knowledge.

I'm just about to pick up my first honda CB400 super sport 1976 f1 as a restoration project or possible brat tracker project, I haven't decided yet!
The bike is running, but has a lots of parts in boxes so isn't road worthy yet.

I m thinking modify it, as I'm looking for a winter project and have seen some very inspirational 550 cafe racer/brat trackers, but I guess this will be worth more in original spec?

My main questions are mechanical for a first time bike project ...

Are the bolts etc imperial or metric on this year?
Could you recommend an average priced / good quality socket set?
Are there any speciality tools I might need with this honda?

I have a reasonable selection of mechanics tools at the moment, but i'm looking to expand my range. I would also like to know if there are any bike specific tools you guys found have made your lives a lot easier?

I am borrowing a motorcycle bench from my dad, as he has restored a few triumphs in the past.
I am also looking at a cheap parts washer and possibly a soda blaster as I'm planning on doing as much work myself.
I was thinking of doing a complete engine rebuild, but what do you guys think? its currently got 46000 on the clock.

Again I've never taken a bike apart, but I did completely rebuild a Triumph spitfire from the chassis up to a very high standard.

Any advice would be greatly appreciated!

Andy