I see a little problem here. I'll put in my two-copper opinion.
UMD on a monk, in my opinion, severely compromises the build, especially in 32 point.
I could see your ideas working on perhaps a dark monk (which cannot heal himself and, therefore, would find UMD heal wands and buffs ideal). On a light monk, however, the ability to use ki to heal oneself and others, buff and raise dead means that dumping any points into CHA until very late in your build is a bad idea. Monks gain nothing to CHA except UMD and the later level 18-20 abilities noted earlier.
By taking precious stat points from WIS or DEX or CON (AC, saves, evasion, to-hit with Weapon Finesse and TWF, HP), I suspect you'd be using that UMD well...for you'd be healing and buffing so much more because you are taking more damage overall.
The UMD charges in scrolls and wands are expensive, finite and will delay an inevitable death.
But ki regenerates with fighting.
Unlike spell casters (which the monk is not), a well-played light monk can sustain himself off his enemies, not UMD gear. A dark monk can channel his ki into destroying his enemies even faster than a light monk, before they have a chance to damage him severely enough to use UMD gear.
Your ability to deal damage (the ultimate purpose to having a monk) is also compromised with so low WIS and nearly worthless CHA.
Because monks can be a bit light on HP, toughness (and enhancements to it) are essential. Survivability is greatly less without them. Intimidate on such a build is suicide--you'd have a lot less to protect yourself against the aggro should it's use succeeds. It's also wasting a feat--as is using Bullheaded. Anything that doesn't build AC, HP and saves on a monk is going to get challenging.
Use the DDO character builder to test that out, for I'd hate to see that build in action.
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