Having not played as a Turkish minor, I can't give very specific advice. However, sounds like you have a decent base that you should be able to consolidate around. Although the Ottomans appear powerful now, they generally run into trouble within a few decades, so keep your eyes out for an opportunity to steal a few provinces. You are only 3 years in, if you don't see any opportunities immediately try building up your trade and waiting for a few years.
Since the big Turks have cores on you (and it sounds like you are spoiling for a fight), I would retain my military NIs. National Conscripts is very powerful for small nations since you are likely manpower-poor, and if you get into a fight with a major power, you will need the replacements.
Since the big Turks have cores on you (and it sounds like you are spoiling for a fight), I would retain my military NIs. National Conscripts is very powerful for small nations since you are likely manpower-poor, and if you get into a fight with a major power, you will need the replacements.