yea that makes total sense. more paddle ish than english longbow ish is what i got from that, correct?
Absolutely. Maple CAN make a longbow, but it'll be LONG, not 60". At 60" long, make it as wide as your material will allow, and narrow it later if you need to.
R/D pyramid doesn't strictly exist. Most R/D's need to have some parallel, but wide, inner limbs. That section will have some thickness taper. Since the bow is going to be pretty short, you are going to need that inner 1/3 AND middle 1/3 of the limb to do a bit more work. Usually, a R/D barely bends in that first 1/3 of the limb, close to the handle. In this case it will have to, or your tips will flatten out enough to negate the reasons for a R/D profile. So, leave em wide and bend em.