As a prolific tomato grower (only because they're damn expensive in the uk if you want non gas ripened crap ones and theyre like a crack addiction), you don't need to fiddle around with all of that rubbish.

Plants of all kinds are pretty good at growing on their own with not much help from us if you know what their natural conditions would be. Granted you might get 10% less yield if you don't treat them nicely but its just not worth the 200% more effort.

Stick them in cheap compost indoors and keep moist with an atomiser spray until they germinate. Wait until they are about 3 inches high, then cut out with a spoon and wham in any old plant pot. When they are 15cm tall, feed 'em with cheap tomato food. When they are 25cm tall, yank them out of the pot, poke a 6' bamboo stick 12" into the ground and throw the plant in a hole at the front. Water daily. Tie to pole every so often. Tomatoes done.

Only consideration is don't grow them in the same place every year or they'll get diseased (technically rotate your crops) and make sure its in a very sunny bit.

Make your own compost as well for planting out. I just throw all my veg waste in a black bin and leave it for a year. Anything goes in except for tea bags and meats and plastics.

I spend about 3 hours a year on tomatoes and get literally 30-40kg using this method (street value here for same quality is around £480).

Get your seeds here (the last respectable seed shop): http://www.realseeds.co.uk/