Itemized advice by number ('cause I'm really feeling numbers over bullets right now)...
1. We need your roster details, league type, and scoring to answer this properly.
2. Do not, under any circumstances, drop Liriano.
3. None of those guys on your list really turn my crank anyway, so start dropping from the bottom.
4. When you're making a roue, let the butter and flour mixture cook for 3 or 4 minutes to reduce the floury taste.
Who you want to drop depends on roto vs HtH really. That said, even in HtH you can probably loose one bench hitter. The culinary tip is a little extra bonus - that's how I roll.