The EPS weeklies (and even more-so today’s 12z EPS) don’t hold the MJO over the WPAC/dateline very long, and instead build the lower frequency forcing into the E-Hem, with subsidence developing over the IPWP/WPAC.
I’m very bullish on a potent niña-like pattern in June now. The return to E-Hem forcing will coincide with the onset of Asian monsoons which changes the teleconnections to Indo-China convection.
Allegheny Highlands will never be humid subtropical given the degree of orographic lifting/cloud cover. It would evolve to Cfb (oceanic) instead, unless warming exceeds 8°C at the very least.