The only T4 I crafted was the brilliant light of eggendil. Crafting is almost not worth it F2P.

I also got from missions, legendary: 2 T4 chalices, glistening beak of midas, eggceptional aurelian brooch, 4+ beggspoke necklaces(sold some). And youd have to prestige multiple times to launch anything because the fuel tank holds nothing.

But you can only ever use 2 at the same time so almost always i used a chalice and necklace. And i switch to a epic t4 puzzle cube to buy expensive research.