Chassis Paint

I was going to go for a red oxide metal primer and follow it by a coat of Hammerite Silver.

aldi are cheaper

To detach the body from the chassis this check-list is extremely useful, my plan is to:

-Wash it with pressure washer (haven't found a steam cleaner here yet - would the steam cleaner be MUCH better??)

-Degrease it with SIkkens M600 (note that I live by the sea!!! so want to go a bit more heavy duty)

-Apply etch primer with Upol: Acid #8

- Paint it with Upol Raptor ( 2K polyurethane coating )

What are your thoughts on this plan? something missing (e.g. wire brushing)?

Last few questions:

-I would rather not take off the engine as well since the guys here are not LR experts and tools are limited so would like to reduce the propensity to f**k-up something by dismantling only what's needed. Are there some chassis parts that wouldn't be accessible to be painted unless the engine is removed?

- Can I just mask the brake and fuel lines instead of removing them?

-I intend to paint the whole 'underworld' including axles, prop shaft, underseal, etc... would the same process of the chassis still be valid?

aldi/lidl exterior paint.
Owned my 110 for 12 years, not had to do any welding.