>>1039028As it's been said, use pre-started plants for tomatoes/peppers/eggplants if possible (though you could also go from seed depending on where you live, if it's frost-free climates like coastal southern California, Florida, some places in Southern Europe... there you can grow them as perennials)
For companion, I have some oregano, thyme and basil around my tomatoes and peppers, dunno if it actually helps though.
Also mulch on the ground to prevent water sprayback (so that late blight doesn't get from the soil to the leaves), as well as plastic foil roof over the more sensitive varieties
