I wouldn't trust a weld at the handle for a full tang knife. Defeats the purpose of strength. Especially if you're going to baton. Just my opinion though.
^ He is right. If you have the time, you could try to grind the flat stock to accept the tang and perimeter weld the tang...something like this perhaps:

It is a lot of work to get the full tang look on a skinny blade. Perhaps you should look at picking up a reasonably priced full tang blank like the enzo trapper instead. Just a suggestion.