I'd consider running one 50 amp 220 circuit for the welder and oven. You can use the same outlet for both. Put the oven on casters so you can store it out of the way when you are not using it.

And one 30 amp 220 for your compressor.

If your pannel box is full you may be able to free up the necessary spaces by using "piggy back" breakers. They are available for some types of pannels. Essentially they are two thin breakers in one module that replaces a single regular sized breaker. Freeing up spaces using "piggy back" breakers is almost always cheaper than adding a sub pannel for two or three circuits.