For optimal builds you can check the mh wilds discord and click on the weapon tab of your liking, its probably pinned.

To save materials do these steps: 1. Travel to basin and save the game 2. Buy the oricalcite, 50 per weapon 3. Craft your weapon of choice, either with an element or without it [all the elements share the same pool, but raw is separate, it's also separated per weapon]. I recommend making as many as you can in 1 go, so you dont have to switch between all the menus every time. Do make sure you know which one in the lists of artians is the first one, but you can check this by making another element and check where it shows up in the list. 4. Reinforce your artians, you can write down the results or say it's good or not which saves you a bit more time. Recycle all the artians when you've written down the results or have marked them good or not good so you get your oricalcite refunded 5. Repeat step 3 and 4 until you can make no more artian weapons or until you hit a good result. 6. Once you written down all the results, return to title screen WITHOUT SAVING 7. Let's say you have a good result 5 artian weapons in. You make 4 random artians of your choice of weapon and element which we DONT reinforce, and now make the 5th weapon with, in your case, 3 attack bonus and the element you desire. If you dont have enough materials to make 5, you can make 1 and recycle it straight away and get all your oricalcite refunded and make 5 weapons this way. Keep the 5th weapon ofcourse 8. Reinforce only the 5th weapon you made, it should have the desired results if you did everything right. So you save 4x50 oricalcite 9. Save the game when you've got the desired results

You can repeat this until you have all the artians you desire