My advice with your prioritisation concern would be to step back and assess your Horrizons of Focus. Your Next Actions (not tasks as someone has aleady pointed out) are at the runway level, your Projects are at 10000ft, your Areas of Focus are at 20000ft, your Goals at 30000ft and so on. If you look at what your current projects and next actions are and you can't see how they relate to an area of focus you have then I'd be asking why they shouldn't go straight to the Someday/Maybe list. If you do put them there, be comfortable that that is the right place for them, at this time.
And yes, if at all possible you should do a Weekly Review to make sure that you have at least one next action for every project on a context list. Priorities are always changing so it's important to have a mechanism to verify that you're still focused on the most important things. What I've learned very quickly is that far from being a chore the Weekly Review is a sanity saver!
Have a great weekend.