Hi, Sandy.
I am not a clan member of TA army, but I would also like to help with clearing TA by strategy. To answer question about which block to target next we should study what happens with W part of monsters on TA, because I have a theory: W part doesn't move unless it is connected with E armies in one of the "corridor" blocks. If I am right, we should try to cut TA armies apart again: I would vote for block 10347 or 10310.
How to check am I right? we need to keep corridor cleared from TA monsters and kill at least one monster on each W TA block, then watch after time of reinforcements: if blocks are staying at "max-1" monsters, it means that W army is static and the main enemy reinforcement center is located somewhere on E occupied blocks - which we should stop first of all.