The aircraft will be significantly payload-restricted over the standard CR7, so don't expect to see the CR5 on anything but 90 min or less stage lengths, and probably shorter. I also wouldn't anticipate seeing it in DEN, either.
Even with 20 fewer seats, 10k is a lot of weight to shed.
10k actually isn't though in this case. You're now no longer double counting the valet bags (since they are being stored on board).
At least 3,900 lbs is gone based on payload reduction (195 lbs/pax), plus at least 600 lbs is gone from the reduction of valet baggage (lets call it 20 bags at 30 lbs each). Dry weight will be less from the reduced # of seats (lets call it a reduction of 10 sets of coach seats, each of which weigh about 150 lbs) which is another 1500 lbs.
Before we even start reducing fuel load, that is already 6k.
I think you're overestimating the weight of a double tourist class seat; from memory, 150 lbs is the weight of a triple seat.
In any case, the weight from those seats removed will be "compensated" by the heavier First Class seats (and 10 of them is a lot of seats) plus the weight of the baggage closet (I guess the structure/walls will be subject to the same regulations as arresting barriers in cargo or combi aircraft).
I think that last 1,500 lbs "block" will end up being much less than that.
You're correct on that, its pretty close to 100 lbs for a double seat (I just went and pulled the specs). The one thing I didn't account for is the overhead bin structures that would no longer be required so that may return a couple hundred pounds as well. I stand by that overall your dry weight reduction is close to 1500 lbs once you factor in the less PSUs, less overhead bins and less seats. The added F isn't that much different, these planes already have F in them and the seats don't actually weigh that much since the amenities are relatively minimal. Its only an increase of four seats.
I just pulled up the dry weight of an existing CR7 that is operating a 900 mile route today (config'd with 65 seats), its currently at 45.5k. Lets assume we cut that down to 44k, that would leave us 21k for payload and fuel. Assuming a payload of 11k; that would leave us with 10k worth of fuel which should be enough to carry the lighter plane about 1,000-1,200 miles, WX depending.
When it comes to the baggage structures, I actually suspect it won't actually be any different than existing wardrobes/closets and overhead bins which are subject to existing requirements when it comes to stopping the baggage movement in event of an accident. Based on the layout, it looks like there will be a mid-cabin bulkhead that makes up one of those walls.