I’d get an APG done on EGE, first. You can make KHPN out of KASE and KBDL out of Rifle in the summer, I’ve done it. Should be ok, but do good research.
The 300 climbs to F410 and above all the time, the 604/605 only do F410 and that only at about 10,000 of fuel and pax. Better cabin in the 604/605.
GF