WFP is just a means to an end. Ya gotta get the work before you worry about optimizing.
Residential is good short and long game. Route falls somewhere in between.
Residential work will allow you to make a day’s wage off one decent job sold. So actively selling residential jobs is the best way by far to make money RIGHT NOW. The problem is, once that job is done they probably won’t have you back for months or even years, so the next day you start from scratch again and sell another job. You’ll get referrals but it takes a pretty large base of established customers to get by on referrals alone.
Route work is a lot of leg work to build up. Lots of follow-ups. Lots of unbillable hours fleshing out each stop. Landing a 20 dollar monthly account from possibly hours of marketing doesn’t feel great in the beginning. It can take a while to pay off your “sweat equity” but once you get that route where you want it, then that’s reliable money every week/month/year as long as you show up and do the work. Big routes can feel like you’re constantly plugging holes, since there is just a natural turnover among your accounts as shops close/move, managers change, and businesses get sold or go under.
Just some stuff to think about when you plan your efforts at the outset. Personally, I would like to maintain about a 40/60 route/Resi ratio. Just enough route work to make my bills though the low season, but not so much that it crowds out better paying residential work during the high season.