Subscribing so I don't miss this. Would love to hear more details, I agree with bikemig to go 650b if you have yet to acquire a wheelset. You'll get lower gearing, and be able to get the wheel into the dropout easier. I did an old '74 Japanese bike with stamped drops and 700cx38mm gravel king sk. There was clearance but you had to deflate the rear tire to get it in.

I'd be curious to know what gearing you're doing and where you're riding.