As for spear prof...you can always just go half-elf, eh? One of the things I like about Elf is Bow prof...not that this character will need it for long term levels, but spells slots go quickly now.
Actually Monk can get Spear and Short Bow Proficiency even with it as a secondary class, I figured that out as soon as I multiclassed, there have been times I expected multiclassing being like the old games but it isn't. I briefly used a spear until I got a decent staff from Ethel at the Grove, the spear was useful for a short while.
I'm not really gonna worry about spears considering there isn't any really good ones later in the game but there is a good Halberd and Trident, a shame Monk doesn't have Proficiency in those. Which is why I decided to go with a Quarterstaff, there are some decent ones.
Edit: Elves do get Bow Proficiency, tho it's irrelevant to Monk but can be handy for classes that don't get any Bow Proficiency like Druid for example.
