Electrician on board ?

[67C10Step]

Perhaps a real electrician will come in but using the 6/3 at the beginning cuts your amp load carry to 60 right off while the 2224 is 90. Not to mention the junction is another place for a failure later.

Not sure on running the 2224 through your crawl space but I don’t think that’s recommended.

Wired my shop from my outside house panel with a 60 amp breaker and similar wire for about 140 feet to the shop panel.