Where can I find the site to check what I will be issued prior to my deployment to Poland?

SPC (Join to see), I've never seen a web page that tells you what specific equipment will be issued for a deployment. Your "my property" page on AKO has your current assigned equipment, but doesn't project future equipment based on deployment. Usually there is a list published from the CIF at your installation. Even then, I was usually surprised by the equipment issued prior to deployment.

Goodluck on this, RFI issue depends on the Unit Mission and funding.

RFI is issued by operation you’re on. OEF, OEF, OFS, etc...Your CIF should be able to answer the question.

There is no website that will tell you everything you are going to be issued. And AKO being used for anything beyond email was still really new when I was in. Contact your S-4 shop, they would have a solid idea what the commander has ordered for a deployment. Also, its Poland, so are probably getting some cold weather gear.

USAREUR (US Army Europe) has a policy that all equipment should be OCP patter, no ACU stuff, you should be issued an IBA full TA-50 kit, and if applicable Extreme Cold Weather kit.
Poland is awesome, the people love us other there and everything is inexpensive. See what you can do to get a liberty pass, Torun, Warsaw, Gdansk, and Krakow are awesome cities well worth a few days each.

Edited as I misread the question