any benefit to swapping heads?

The low-rpm issue can be eased with a bigger TC and deeper gears........ to the point of being a non-issue; the downside is the car becomes becomes a weekend bomber....... for most of us. But you get to keep the Legitimately lopey idle. And when it gets on the pipe, hang on!! And the truth is; there very much is such a thing as having too much torque on take off, and it all goes to tiresmoke. Personally I'm OK with that,lol.
But more than anything, with a manual trans, I like the dump it and go personality of a high-torque engine, and will gladly sacrifice the top-end rush, to get it. I was a far happier guy with the 270/110 cam than I was with the 292/108.
Yeah sure the 292 was wicked on top, but with 3.55s ... it didn't start until nearly 50 mph in first gear, and was done by 55. Then came the shift, and I didn't see the rush again until 66 to 72, in second, and 90/99 in third which I stretched to 106 in the quarter.
Whereas with the 270, torque was strong right off idle. But there was no top-end rush at all.
Finally I compromised with a 276/286/110, sacrificing a bit off the bottom to get a bit on the top. To reclaim the bottom, I got me a 3.09 commando trans. Dadaboom.

To make your life easier, you could play the TM (Torque Multiplication card). More rear gear, a lower gearset in the trans, and a higher stall TC. Of course more compression would be cheaper.