First of all thank you for the answer
I have no experience with any kind of full suspension bikes and from what I read a air shock is more likely to blow a seal if used agressively (especially if used by a newbie).
Of course for the beginning I assume it will be ok but I would prefer the robustness of a coil (I can be very hard on the landings sometimes - I'm not that good
) and I'm afraid that soon after the new bike aquisition I will have to replace/rebuild the rear shock anyway. Since I have a great offer for a relatively cheap coil over rear shock (some old swingers) I would like to buy it now (the eye to eye measurement is ok - already asked that
Plus from what I have read on the internet and what I know about air actuators/dampers (not much) I could say that it seems that a coil over shock would be plusher/smoother/more consistent through the whole suspension travel.
I also realize that a air shock is excellent for setting up the right sag for virtually any weight with no additional cost.
All of the things I have wrote are only suppositions based on prior knowledge and some relaxing readings on the internet. I don't know anything for sure and if I wrote something really ridiculous I am very sorry.