One thing I don't quite understand, I have a wallet but can't view my public key/receiving address at all, without downloading the entire history of the blockchain... If I had that info, I could just punch that into here?
http://www.homebitcoin.com/easybalance/I tried to research and according to some of my research Bitcoin core will hide addresses/public keys until the core is fully synced. They added this for privacy purposes and it was started at the 0.13.0 version.
If you want to view those public keys/receiving addresses then your last option is to run bitcoin with -reindex and let the core fully synced. Once the core is fully synced all used addresses will show up from the address receiving tab.