Cam question...

Yeah, since it's a temporary engine just plop it in and go.
If it's too hairy for your liking, you don't have to live with it forever.
If it's too mild, well, you'll appreciate your new engine even more.
Back in the days of yore, I had a 'teener that I threw together out of orphaned parts, and I used that while I was going through my 340. Turns out it was pretty darn good- I kept that thing around for years as a spare that found it's way into a number of cars while piecing together "better" engines for them. All these years later I still kinda miss that old mule- it was a hoot, took a lickin' and never missed a beat.