SS MTB build (inc. hub installation, disc brake bleeding, suspension fork lowering)

Right, n00b alert...

Nearly finished getting parts for new bike, and was considering attemping to put it together myself instead of paying a bike shop to do it (been quoted anything from £70 to £130 for the build and brake bleed/fork lowering). The wheels are built already, but everything else will need putting together. It is a single speed dirt jumping / street bike.

If I was going to try it myself, what tools would I need? Would it be wise to get a torque wrench? And I am confused by all the different types of grease - will one do the job for all the bits of the bike (BB/headset/seatpost installation etc) or do I need different types?

As I understand it, I should be able to do it all with:

Park BBT-9 bottom bracket/crank tool (£15)
Park Polylube 1000 Grease (£5)
Hope brake bleeding kit (£25)
a set of allen keys
a chain link tool
a pedal wrench
some tyre levers

Anything I've forgotten? The headset is a Hope integrated so I don't need a headset press or anything.

Here are 3 YouTube videos I found which I would use for instruction:

Fork lowering:

YouTube - HOW TO: Lower Rock Shox Suspension Forks | | | NS Suburban

Brake bleeding:

YouTube - Hope Technology - Brake Bleed (Mini Lever)

External bottom bracket fitting:

YouTube - Replacing an External Bearing Bottom Bracket

Thanks a million.