Quadgrow - help, please

in Fruit & veg
I am getting to the time when I will need to plant up the tomatoes into their Quadgrow stations in the greenhouse.
It's the first year I've used this system. I have also bought mulch caps.
Any advice, please, about fitting the plants through the mulch cap hole? Some of my tomatoes are already too big, i think.
What kind of compost do you use?
Any general advice, too, about Quadgrow gratefully received.
I am growing 7 tomatoes, plus one cucumber (just germinating).
I will be growing the rest on inside till warm enough to put out in their big pots in a south facing corner, in a mix of JI and PF.
We had a bumper crop last year.
Can it be beaten?
It's the first year I've used this system. I have also bought mulch caps.
Any advice, please, about fitting the plants through the mulch cap hole? Some of my tomatoes are already too big, i think.
What kind of compost do you use?
Any general advice, too, about Quadgrow gratefully received.
I am growing 7 tomatoes, plus one cucumber (just germinating).
I will be growing the rest on inside till warm enough to put out in their big pots in a south facing corner, in a mix of JI and PF.
We had a bumper crop last year.
Can it be beaten?
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There is a tank for water/feed, a wick into the pot and a plastic mulch cap.
I think a few people here have used them though - so they might be able to help. I'm sure there was a query a while ago about them too.
The other advice I would offer is to plant the tomato so the first shoot is facing forwards. The main stem can be tied to the rear cane and then grow on the first shoot which you tie to the front cane. Be sure to place the mulch caps so the holes are facing front and back not side to side.
One other tip. From our local market I buy for a couple of quid a replacement old fashioned mop head - the sort caretakers use. Take off the plastic binding strap and the threads make excellent tomato ties. Being a bit precious, I stain the ties by dunking them in a brew of old tea bags in order to make them blend in better.
Luckily, @BenCotto I had held some back and I watered them well. By the time they were out of their pots and the roots 'loosened' they went in through the mulch cap aperture OK.
However, the pots are much larger than I would normally plant into at this time of year, so it was a trade off between mulch caps/pot size.
It's all an experiment this year and I will grow the rest on in the 'traditional way'.