I was in a big hurry,but at least you had that sweet additional firepower - and it was basically free.
I was also impressed by how well did my infantry perform,they were half upgraded but 50 of them were already mowing down large squads of enemy dragoons and pikes like mad - I think it's because I took the rate of fire upgrade in the academy a bit earlier that I usually do. The enemy howitzers were a huge pain in the ass later on,tough,but the 160 Hetmans I had produced before I left were able to swoop in a enemy town (full with towers and everything) and burn more that half of it,so I guess that was a nice payback to them from me.
Btw,here is a little tip for Parzi and BoBo - when you Develop Geology in the academy (500 gold,reveals all potential places for mines on the mini map),you can guess where the enemy is going to come from - just look for clusters of mines on the mini map and there is quite a big chance that you will be able to be better prepared for a enemy assault.
And please,try playing with some other factions! You 2 seem locked on to Bavaria/Saxony and Hungary. Try out some of the other ones,and find the one that suits you the best,because I already found mine,and it is so much more enjoyable now