I'm running an antminer 'a' solo on my local bitcoind 'pool' plus an S5. Both are hashing away lovely, but only the S5 goes through bfgminer, 'a' is connected to my bitcoind 'pool' directly . My question is - what wallet will it use if any i.e. my bitcoin core wallet or can i add my own wallet to bitcoin.conf or some other way as bfgminer does not recognize 'a' or am i missing something here ?
Your chances of any return whatsoever with a pool that's just you are essentially non-existent.
Pool mining works since pools can accumulate a large amount of hashpower from thousands of users. The pool's chance of finding a block is then fairly high, which then allows them to use the block reward to pay proportional amounts to all their users.
As JBackzuk's comment says, solo mining is essentially probabilistically impossible. You either find the entire block, or nothing - no partial shares.