It is exciting isn't it. I am very jealous as I am on the waiting list for an allotment. I am pretty certain of getting one this autumn/winter as some new ones are being created. But as with all these things it is taking much longer than expected. So I can't place my seed order until I get it even though I know exactly what I want . .
I can't wait!
I've just taken on a new and recently created plot on a new site set up by the council. Its only 12 x 12 yards, though I aim to have two at some stage in the future. There are 14 plots in all. Cos of time spent waiting, as in your case, and as each stage has been done and with all the wet weather this year (though it would have still happened whether or not), each plot became heavily weed-infested. They were only put out to rent in late July this year having been 18 months in the making. Already with a lot of labour, the soil is far from ideal. There's still loads to do in the way of digging and enrichment. Don't bank on getting a new plot that's going to be plain sailing and perfect ground, especially at the beginning.
I've wondered about seeds and things, along with excited co-tenants, but have counselled caution and not to overdo things, especially with every variety of everything. Loads of weeds are ready to pop back up for ages yet. I'm aiming just to work a third, or maybe a half of the patch, and if I can get that amount single dug (hopefully) and a third of it manured, I'll be satisfied. Two thirds of it is now covered with black plastic and if it has to stay that way for a year, then so be it. I can keep rolling it back as I get round to working it. Spuds and leeks are all I'm going to plant next year, maybe a few beans if I can get round to digging out a decent planting hole for them. I'm not planning to go for too much, new site or not, to avoid disappointment.