Butcher's Coat
Striker
Ahh right. Moneymaker are a good tomato for the green house, as are cherry.The seeds said - Cherry tomatoes and Moneymakers. I've only got a small greenhouse.
I have them in my greenhouse this year.
I don't know how large your plants are at the moment, but plant them in large pots/tubs/buckets with good compost - or in a grow bag - 3 to a growbag. I use a 8" pot with no bottom on it, sunk into the growbag itself. And yes plant them deep - up to the 1st original leaves.
But when the 1st truss is formed, then feed it with a high potash once a week, and when the other trusses come, a few times a week with potash or the liquid feed.
As you say, nip the suckers out, and stop them when you have 5 trusses by pinching out. You could also try removing all the bottom leaves up to the 1st truss once all the 5 trusses are formed.
BUT - you must have pollination - so keep the greenhouse door open and windows - to attract the pollinators.