You need to collect at least 265 Red Envelopes a day to reach the last prize. It is doable, even without spending any gold(either in the past or the present). Granted, the numbers would require you to collect everything instantly with a second missed, which is impossible, but we don't need to be so pedantic, here. It's just a rough guide. With only one nest, one evolution temple and all 7 Farms, plus the Quest and Lucky Coin, one could make a maximum of 294 Red Encelopes a day, if they collected around the clock.
7 Farms x 24 Hours = 168
1 Evolution Temple = 24
1 Nest = 24
Quest 6 Red Envoleps every 3 hours 8 times a day = 48
Lucky Coin 5 Red Evelopes every 4 hours 6 times a day = 30
Again, that adds up to 294 a day, if my maths s****s are not in error. If you have any extra Nests or Evolution Temples, it just becomes that much easier. Each one is an extra 24 potential points a day. With all four Nests and both Evolution Temples, that's 390 a day. The real challenge will be seeing how many Red Envelopes we need for the final Community Dragon.