The Nepenthes seeds are different hybrids involving lowland Thai species, the parents are Viking, mirabilis, Kuchingensis, ampullaria - in different combinations.
Not sure what you mean with the size, but of course in 3 years you should have decent sized plants. Thai-hybrids are fast.
For Drosera I have the first D. indica ready, pretty and get's for a sundew quite large.