Long storage on Axle Stands? How often to run engine?

[rotorwings]

(R300 2.0 Duratec)

Just looking for the prevailing wisdom on two points:

- During long periods of inactivity, does it makes sense to run the engine regularly (how often?), or just leave it for the whole period (~5 months) before starting again?

- Are there any issues with storing a Caterham on axle stands for a long period (~5 months)?
Of course I am using the correct jack points as described in the manual (see below), but the rear jack points don't look particularly strong.

[rotorwings]

Thanks DCL.

It will be left in an outdoor concrete multi-car (50 car) garage, that is well ventilated and dry, but exposed to all temperature variations during winter.

So I guess I should give it a run on the stands every 4 weeks or so up to full engine temp?