Advice re. the weeds? It's my project, not counting on anyone else being able to help me, which is fine, but ... and I may be able to get someone to rotivate for some beer money
Each time a rotavator cuts into the soil it kills worms and cuts the weeds into more weeds.
What soil is it?
Is the soil dark and rich, or clay, or sandy?
Ours was clay which meant you could only dig the weeds out for about a fortnight in spring and a fortnight in autumn, otherwise it was too dry or wet.
My advice would be to cover the lot in cardboard or thick newspaper, or thick weed fabric.
Then dig over a small patch at a time, whatever you can dig in one session. then leave that as a stale seed bed for 2 weeks, hoe off any weed seeds that germinate, and then plant that bit up.
Then uncover another patch, rinse and repeat.
A 10 pole allotment will be a huge commitment, cover what you cannot deal with this season so that the lack of light weakens the perennial weeds.
You really need to decide as well; do you want an allotment that you dig over every year, or do you want paths and beds where you walk on the paths and grow in the beds? And then you can decide what you want your paths to be and work around that.
Incidentally, growing in beds rather than in rows, can increase your yields as you can get more crops into the space than having to leave a walking row in between each crop row.
Also, I'd focus on growing 4-5 things in year one, and grow them well.
Potatoes, Peas, Squashes, Beans, and Courgettes are pretty fail safe and will give you a fair amount of food to eat in the first season.
Potatoes in this month
Peas in April
The rest can go in mid May.
Just take it easy, dig thoroughly, plan well and don't overdo it.
And don't rotate. It's often the advice given to newcomers and that's what then swamps them with all the regrowing weeds that then take control.
Consider this: if weedkiller killed weeds, why are there still weeds? All you get if you use it is weeds that are stronger and more feisty than the ones you started off with.