get some practice and during that time you can always triple weld(three beads)
do some practice runs, then try to disassemble them to see how they held/
when in doubt you can chamfer/preheat for better penetration.

Did my whole frame with same welder only a Century brand.
Mistakes take all day to grind and separate.
Remember, it's thousands of pounds of tensile strength per cubic inch of weld,
just guesstimate/calculate and go for lots of weld. If anything your life reaLLy depends on, like an A frame, get it TIG'd