For a first visit, I'd try mashed bread + bread flake, hemp and tares, and any slugs/worms I could muster. For a first exploration, an Avon float with most of the shot bulked, plus one dropper shot - big enough to register on the float when it sinks.
I'd start at the top of the stretch, feeding mash and trotting bread, a few minutes in each swim; if you get "that" feeling about a swim, sit down a while and give it a spell on hemp. Any bits too shallow for the float - and I'll cheerfully trot 18" of water on a small river - but where chub are showing to free offerings, whip the rig off, tie on a big hook (6-ish) and freeline a slug or a big bit of flake. Slugs sink, and have to be trundled quite carefully, keeping in touch with the bait; a big bit of flake sinks slowly, and can be allowed to pull line directly from the reel - when the rod thumps because the reel can't keep up, that's a chub!
Weirs themselves can be s*ds to fish because of all the vertical eddies and undertows, so don't be seduced into wasting too much time there - the fish don't need the extra oxygen at this time of year, and there's no point busting your bits getting to grips with a swim whose senior residents have moved out! BUT leave no slack, gap in the weeds, or possible undercut unsniffed - you never know!
At the neck of the weir are usually shallows - still freelining country - but the prime bit, especially if the shallows are long, will be the point where they deepen. There, fish will lie picking off anything that lost its footing over the whole length of the shallows. A couple of tries freelining, then back on with the float rig, holding back hard to keep the bait up over the shallows, then letting it run so it sinks as it reaches the deeps.
If you reach the bottom of the stretch, work your way back up using upstream leger tactics to fish the swims you most fancied (and fed) on the way down - but keep an open mind and read each swim!
If you're very organised, one of those mini tape-recorders is a sight more handy than a note-book - write up your notes at work (I DIDN'T say that!) and you'll have a headful of ideas to try out next time!