Interesting project, I do hope you will keep us posted with progress. Put a bit of time into planning your workshop and give consideration to wood storage. We always need a bigger stock areas than we think we do. Also plan you power supply and lighting carefully and ideally lay on water. Consider how yo optimise year round usage with winter warming!
I moved house last year and also had to set up a workshop almost from scratch as a lot of my tools had been stolen. I already had a large outbuilding but I would have done it differently If I was starting from scratch. Re tools: may I suggest that you think carefully what you intend to produce. In my case it is very mixed, ranging from outdoor furniture, to kitchen cabinets (all for own of family use), flooring, panels etc and my long term hobby of (occasionally now) making acoustic and electric guitars. I do have a table saw but I hardly ever use it and I don't think it would be near the top of my list if I were starting again. Mine is an old heavy duty multi and I picked it up dirt cheap when I bought my Fobco pillar drill, so it was an opportunistic rathe than intentional purchase. A table saw is great for panels, especially if you re doing repetitions work, but they take up a lot of space.
I would not want to manage without a planer / thicknesses, as it saves me a lot of money in not having to pay for other people to prep my timber to size. They are readily available second hand and do not take up much space. Mine is a second hand Axminster Trade one and is fine for what I need. For commercial use a new Hammer of something would be nice.
I do find my sliding chop / mitre saws extremely useful and would not want to be without them. Large capacity is helpful. I use these far more than the table saw.
I also have a 16" bandsaw that I use a lot, amazingly useful tool. This is excellent for re-sawing timber. Mine is a Jet but I would be tempted by the new Startrite 403 if I were doing production work. I also frequently use my 12" disc sander.
When building your shed try to plan in dis and chip extraction arrangements, ideally siting the machine outside the workshop in a lean-to / annexe as it will cut down on both noise and dust.
A router is super useful. I have 5 (three came as a job lot off this forum - I dint really want three extras) and one permanently lives in the router table, two are set up for dovetailing, and the others are for trimming and freehand. You only need one decent router, but I would get one with a 1/2" collet. A router table is dead handy. Easy to make or a decent Trend one is £200 or so.
I managed to go for years without an impact driver. I bought a new Milwaukee Fuel 5Ah drill / driver set last year and now I cannot imagine how I ever managed without a driver. When you build your shed it will be incredibly useful. I use mine far more than the drill. Recently I have built lots of formwork for concreting as I am putting up some buildings and creating path foundations etc, and find it super quick and convenient to bank everything together with the impact driver. Brilliant tool.
Electric sanders need to be on your list. Lots of advice on this forum. Random orbital and a decent belt sander are very helpful.
When you make your bench, do it right first time. Heavy frame, thick top, big vice. Flimsy bench is a bad starting point.
Leave a bit of space for a lathe if you fancy some turning. I bought mine on a whim really and I must say turning can become quite addictive.
Hand tools - you will know already what you want and use. You will need some sort of sharpening station.
I would strongly recommend that you use this forum and others to spot second hand deals, monitor eBay and Gumtree and over time you will find good quality tools at much better than new prices.
Feel free to come over to my workshop, have a look at what I have ended up with and learn from my mistakes if you like. I make plenty of mistakes.