Hi, i am not a pro either, but here are my thoughts:
As a Counterdeck, you need more counters than your opponent has threats. I think you should lower your creature count and cut all equipment for more 1-Mana and 2-Mana Counterspells. I get the idea of unblockable creatures pumped with equipment, but that is not reliable enough imo, you always need two connecting cards for you plan. And the equipment cards you chose do too little for too much mana. Always remember, that cards are a limited and valueable resource. Equipments and Auras have to be VERY good to justifiy the second card you need, because they do nothing without a creatue.
Better try to find about 6 blue creatures for your deck, which can
serve as a wincon for themself. First you totally have to control your opponent, then you beat him to death with something like a 3/2 Flier. I would recommend
delver of secrets for that purpose. I think the deck you are thinking of, should have no less than 28 control cards like counters and removal, around 24 lands and max 8 Wincons. Hope my thoughts help you.
Enjoy your Deck and welcome to MTG!