"Multimedia"? Over HF where one "cell" (using the WWAN nomenclature) may have several tens kbps of total (uplink and/or downlink) throughput at most? (see Shannon-Hartley theorem, which is distinct from Shannon-Nyquist sampling theorem) But for emails and the rest of proposed use, sure.

Also, OsmoDevCon is iirc invite-only, making linking to its schedule on a public forum mostly pointless (visit #osmocom on Libera for more info; disclaimer: I wasn't invited, either). Unless, of course, a recording would be added (which it probably will), but it's not true yet (as the event didn't took place yet?)