Italdream, it looks like my excitement over the FGMs low dome got the best of me, and I've been completely overlooking a major FGM fault.
I don't know how I missed this, but the door is too big. It looks like FGM uses the same size door on all their models, so, on the 950 (Robyn's), the door size isn't glaringly noticeable, but, as you start looking at some of their smaller ovens, the door size is ridiculous.
Now, this may not be the end of the world and may not prevent me from eventually endorsing this oven, but, for now, especially with your desire for something simple, I'm not recommending it to you.
The only way I can endorse this oven is if
1. FGM offers a door insert that shrinks the size considerably
2. The person purchasing the oven is willing to build an insert themselves.
Because FGM uses the same size door and throat on all their models, I'm not sure an insert will even be the answer for the smaller units. I'm going to have to think about it. Jeff (Shuboyje), from the specs on the Neapolitan inspired oven that he built, seems to feel that a tight throat is important, but I'm not 100% certain how much it brings to the table. It's kind of like the looped back chimney that traces back on top of the dome in Neapolitan ovens- if one of the pre-cast folks could incorporate that as well, I'd be ecstatic, but I don't think it precludes an oven's ability to do top quality Neapolitan pies.
In a perfect world, the FGM would have the 9" ceiling, the looped back chimney, a small throat and a small door. But, alas, this is not a perfect world

Out of all these features, though, I think the dome height is the most important and the door a close second. The chimney is probably a bit of a pipe dream. And the throat, it may not be that critical, but I still have to think about it- especially in relation to the smaller FGM kit.
Antoine, are you reading this?

Could you pass along these concerns to the powers that be? An oven with a 9.5" dome really shouldn't have an 8.5" door. Perhaps for bread, but not for pizza. How about taking a page out of the Stefano Ferrara playbook and fabricating some kind of insert for the door?