Need help with lumber pricing

[4x4American]

Howdy,

I got my first real order from a paying customer.  They wanted a 12" x 12" popple timber 8' long, then cut with a chainsaw in a way that they can drive a truck up it and have 30" of flat on the top, so pretty much ramps.  I got it done today.  Took awhile finding a decent sized popple log.  I need to figure out what I oughta get for it.  Any ideas about how I should charge?  I was thinking to do whatever board feet for the timber, and then by the hour for the chainsaw part.  Didn't take long at all to do that.

Thanks!