You're gonna miss that all-in-one package the first day you do a double or triple.
There is NO substitute for on board speakers in the smaller settings, None.

I sure hope you have a return policy on that Tyros ..... you're gonna get tired of lugging amps around to small parties that don't require them !

If you are adding extra bulk by having external on speakers, why not just lug and extra keyboard around that adds another dimension that way? maybe a dedicated 76 or 88 note piano will be a good addition to your larger setup, and the smaller ones just use the psr alone.

Ahh, who knows .... who cares ...... it's just alot of words for the same old story.
"New Toys" ... Be happy.