Of course you can play with a back 4. You will be able to attack the flanks better and of course dl and dr will protect....They will defend the ST with your dc together!!! And why? Because we Set zonal marking!!!

Sometimes those opponents can get good results, because there is full Power through the middle. I would suggest 4-5-1v .

That's all up to your philosophy. I didnt say that 3-1-4-2 or 3-5-2 v were wrong. If you are strong enough, you will beat it.