PNW gardener will my tomatoes mature?

[indo]

The first pic is of a beefsteak which has tomatoes which should mature on the vine. The other pics are from the mortgage helper and i have 6 of these plants. However, the sizes are as you can see not very large at the moment. In Vancouver we probably have 4-5 weeks left of the growing season but do you guys think these tomatoes will mature? If not should i just pluck all of the flowers and the tiniest tomatoes so that the larger fruit will have a better chance?