Thank you for your praise!
Yes you can use the dermastamp on all of your areas at the same time, however a dermastamp is more intended for treating localized scars. There is absolutely no reason why not to use it elsewhere but since it has only 35 needles, using it on large areas will make it blunt much sooner than using it on the scars only and you will have to buy a new one. Be very careful about using it on your nose. Do a small test patch first and never do any intensive, aggressive procedures on your nose. Nose skin is different from other skin and it heals unpredictably - you may end up with worse skin there then you started with.
Either use a dermaroller for everything and replace it more frequently or buy a 1 mm dermaroller.
I use almond oil to clean and moisturize my skin. I slightly wet a cotton pad with tap water, add almond oil and clean my face. Almond oil will keep the skin moist and supple by preventing evaporation of water from the skin. I also apply almond oil on my body skin (while the skin is still wet) after a bath. I keep a bottle of almond oil in the fridge and refill a small container that I keep in the bathroom. From time to time a use fine salt in the shower for exfoliation.
I use Infadolan around my eyes and on top of my hands.
I use the A-Ret gel twice a week and the homemade vit. C serum three times a week but I have to admit I have been slacking on it and did not apply it as frequently.
When my skin is irritated I apply a cream with pantothenic acid.
I use a sunscreen on my face with micronized zinc oxide.
I do not think that this skin routine is good for every skin type or totally sufficient in general. Neither it is possible for me to answer questions regarding efficacy of various creams. I cannot do the efficacy evaluation of any creams. It has to be done by unbias clinical trials (if at all).
You have to experiment to find out what suits your skin. Just remember that often the only difference between a cream that costs 100 dollars and 10 dollars is 90 dollars and for the rest there is no difference in their efficacy in spite of all kinds of hype sounding ingredients in the expensive cream.
Also the more is not always the better. Do not use peelings or exfoliation excessively - do not clean the skin excessively. The skin has natural oils that keep it moist and protected.
If you have problems with blocked pores, try this:
https://http://forums.owndoc.com/dermarolling-microneedling/Oil-cleansing-method-to-get-rid-of-blackheads