[mickmate]

A good rule of thumb with stainless welding is to go a grade higher with the filler wire than the parent metal. Weld 304 with 308 wire, 308 with 316, 316 with 321 and so on. It's easy enough to join the mild and stainless with TIG, Stick or MIG. I'd recommend using the higher grade of wire and a gas of mostly or all Argon. Your 98/2 will work great.