Right off the bat you will not be able to. In almost every category a certain number of junior reserves have forced coverage awards that your schedule will be built around. Generally this will be every or almost every Sat/Sun, and every major holiday, so you’ll have lots of 3-4 day RES stretches each weekend. Once you can get enough seniority to get above the coverage award cut line you can pretty much stack all your days anywhere you want them. Just note that coverage awards on major holidays can jump and bite even the most senior reserve bidder.