Stock considerations

photo enhancing stock smooth,durable wont bend, not a high gsm, crisp white to keep the contrast of my images sharp and for black to become really black on (may have to print black twice? need to test print and order stocks)
coated stock

soft matt heaven 42 150gsm GFSMITH
170gsm

Xenon PheniXmotion 170gsm

I considered one of the pearlescent Gmund action papers but from past experience, textured papers arent the right choice to get a high finish print on to as parts are left unprinted.

thickness as if holding/flicking through the photographs themselves? print on photographic paper?

https://photographylife.com/guide-photographic-photo-paper

Photo Paper Finish

The first aspect that consumers often evaluate is the photo paper finish. It is a translucent chemical coating that is designed to improve the appearance of the print which otherwise may appear dull. The problem lies in the inconsistent terminology that brands use to describe their finish and the headache of making sense of which is which. Common options include matt, glossy and satin, but when consumers come across terms such as semi-gloss, pearl, luster and other finishes, confusion is likely to occur. Here are the most common options you will come across.

1. Glossy – The most widely used finish is the glossy finish which comes in degree of glossiness from normal to high glossy. The shine from the chemical coating helps distinguish the smallest details of the photograph, however the resulting glare makes viewing the print from certain angles challenging on occasion.
2. Matt – Depending on the brand, you will come across this finish as Matt or Matte. It is situated on the other side of the scale with zero glossiness. The lack of expensive finish makes the photo paper slightly cheaper to produce and more affordable to buy which helps explain why it is commonly used in brochure and flyer printing. It is also commonly used when printing black and white photos, as glossy finish can diminish from the photo’s credibility.
3. Satin – The satin finish is situated precisely in the middle, between the glossy and matt finish. It benefits from a level of glossiness, but nowhere near that of the actual glossy finish. Certain brands such as Epson call their range of satin finish “semi-gloss” so the best description will be a toned down glossy finish.
4. Pearl and Luster – These are offered by the more professional manufactures and represent a type of satin finish with a textured feel. The normal satin or semi-gloss finish is flat, but these two include a delicate texture to make the print feel more special when held.